Some bad news to report.
First up, the King Midas zoanthids I introduced just under 4 weeks ago. For the first week I left them sitting on the sand and they looked great, opening up nicely so I decided to fix them down on the rear of the right-hand rock pile. Oddly after that they refused to open up again. Hmm, I thought maybe they don't like that spot so I removed the frag plug from the rock and sat it back down on the sand at the front of the tank again. Happily they started to extend once more so a couple of days later I fixed them to a new spot not that far from where they were sitting on the sand. Sadly they never opened up again and started to shrink. As it stands they are pretty much all gone now, a couple of tiny polyps remain but they are closed up tight and will no doubt soon fade away. I am at a loss as to why these particular zoanthids have not survived when my other 7 varieties appear to be doing well. It's very frustrating and I'm quite sad about it because they will be my first coral loss since I started up. I didn't even manage to take a picture of them when they were open to post here for posterity's sake.
The next loss is not so much of a mystery which makes it all the more maddening although I've only just put two and two together after the damage was done. The two new Red Spotted gobies (Trimma rubromaculatus) are indeed a male and female pair as I've noticed them "gettin' jiggy wit' it" on a number of occasions now. This is a lovely thing but unfortunately means that they don't want any fish swimming near their patch and sadly their patch appears to be the entire rear lower half of the tank. Now this just happens to be the same area that the Red Spot Cardinals (Apogon parvulus) like to hang out. I'd noticed recently that the Cardinals had taken to swimming at the top of the tank where the flow is quite brisk, This a bit odd for them and should have paid more attention to it. It all became clearer this morning as I watched one of them stray just a bit too low and was immediately and aggressively chased upwards by the larger of the two gobies (named Rocket which seems quite appropriate considering the response I witnessed). I'm sure you can guess where this story is going now, skip back to yesterday and one of the Cardinals sadly jumped out of the tank. I was working opposite at the time but did not realise what had happened until it was too late. I feel sure after what I observed this morning that it was being chased by one of the gobies, after all these fish hadn't shown any inclination to want to jump before the Red Spotted gobies were introduced. Sigh, another hard lesson learned, mixing different fish even really tiny ones in a small space is not an easy thing to do.
I have some new stuff. :o)
After searching for ages I located a shop that had some Red Spotted gobies, Trimma rubromaculatus, in stock (finally Facebook is useful for something). They only had two left when I visited but apparently they were a mated pair so I just couldn't leave without them. They've been with me for 4 days now and seem to have settled in a treat. On introduction they were ignored by the other fishy residents with the exception of Candy, the Trimma cana goby. Candy is actually a male Red Striped goby and he was not best pleased to see a another male goby, even of a different species, invading his patch. There was much posturing between himself and what I would assume to be the male Red Spotted goby. No damage was done fortunately and now they appear to be keeping their distance from each other. The new gobies, named Rocket and Sparks, are much more active than Candy and are out and about a lot more especially at feeding times when the nanostream pumps are off. They do find it hard work to battle the flow when the pumps are on and are generally found suctioned onto the underside of rocks or resting on the back wall instead of swimming up in the water column.
In addition to the gobies I also purchased another small frag of zoanthids, this variety is called "King Midas" and comes with some hitchhiking fan worms too, a nice bonus in my opinion. I think I'm pretty much out of space now where zoanthids are concerned. Picture to follow in my upcoming 1st July update.
I also added to my crustacean collection in the form of a Pom Pom crab just because I think these guys are just the coolest. They have such beautiful markings and the little anemones they hold are neat. I hope he (or she) doesn't do too much damage waving them around the tank, lol! No photo as of yet because he's kind of shy at the moment.
In other news Lurch the conch finally got up after his extended snooze. He spent almost 2 whole months hidden under the sand with no movement at all except for the odd glimpse of an eyeball and his proboscis poking out of the sand for an occasional bedtime snack. I'm surprised that he can survive for that long with such little food to sustain him. Luckily he seems none the worse for his 'hibernation' period thank goodness, I just wish I knew what caused it, is it a natural part of his lifecycle or was there some water quality issue that he didn't particularly like?
The Nudus gobies have not been in much evidence since Gordon the Whitecap goby made his leap of faith last month. I used to see them all the time but after the upheaval with the pistol shrimp and the loss of Gordon they hardly ever came out of the burrow system and never both at the same time. Then Hop (the male) vanished entirely, the last sighting of him was on the 18th June and after that nothing. He has been known to go missing before, when guarding eggs, but I generally get to see his head pop out of the burrow every now and again. I was beginning to think that he'd had an altercation with the pistol shrimp and lost or been buried alive under the rocks, eek! Happily no, after 8 days he's back out again like nothing was ever wrong so I guess he had been guarding eggs again after all. I wish they'd let me know so that I don't worry so much, lol!
Now that I'm down to four Red Spot Cardinals I've noticed that they no longer shoal together. Two of them hang together in the back left-hand corner of the tank, the third swims alone in the back right-hand corner and the fourth, the smallest one, swims right out at the front of the tank. I must admit I do miss seeing them all together.
As for the Nudus gobies I've not got a clue what they are up to any more. They used to be out all day long but now they are mainly hidden underground doing goodness knows what. I wish I had X-ray vision so that I could see what they are doing. They are using the pistol shrimp's burrows; are they interacting with him at all? I would be nice to think that one day they might pair up but I can't see it happening at the moment
Will, the blue-legged hermit crab shed his exoskeleton this week which reminded me that it'd been a while since I added any new shells. As soon as I dropped in some larger accommodation he marched up to the nearest one, whipped his naked bum out of his old shell and moved into the new one. Has he no shame, lol! Here he is showing off his bright white new shell soon to be covered in coralline no doubt.
I noted in my June update that the Plexaurella sp. gorgonian had a damaged area on one of its branches. Well, a couple of days following that two more small damaged areas appeared and this time the gorgonin inside was exposed. The polyps then retracted completely. I waited for a week in the hope that it would miraculously recover but the polyps remained hidden and a layer of algae began to cover the branches. I decided then to take action and move the Plexaurella to a different area of the tank, if I left it where it was it would be a goner in no time at all. Finding a new location proved somewhat tricky as real estate in the tank is limited these days (ahem, what did I say about not over stocking my tank with corals!). In the end I decided to fix it close to where Acro #2 used to reside, it's not really an ideal spot long term, especially if the tiny remaining base of Acro #2 survives and sprouts new branches, but that's a problem for another day. Anyway I doubted that the gorgonian was going to make it but it appears I might be wrong. The following morning the polyps began to extend again and now 3 days later they are almost all back out again, it's not back to its previous fluffy glory but compared to how it looked before moving it's amazing. So was it a flow issue or a lighting issue? Or was the Seriatopora hystrix to blame, it was directly down flow of the Seri, maybe that was releasing some noxious substance that the gorgonian didn't like. Now I need to wait and see if the damaged areas can be recovered.
It's only taken me 4 months but I have finally managed to snap a shot of Gordon the Whitecap goby. It's not much of a shot but believe me it's waaaayyy better than anything else I've managed to take to date. At least he is recognisable as a fish and not just a white blob that could easily be mistaken for a grain of sand, lol!
He's a lot bolder these days and I generally get to see him and Al, his pistol shrimp buddy every day. They are most active towards the end of the day when the lights are going down but I do see Al (or more accurately Al's antennae and claws) at every feeding time. I don't really know what Gordon is eating, I occasionally see him take cyclops/Calanus and even a small pieces of Mysis if Al doesn't get to them first. I also see him strike at 'stuff' unearthed by the shrimp's digging activities so he must be finding tiny crustaceans to eat as well. Most of the time when when the rest of the fish are fed he's nowhere to be seen.
Now I just need to get a decent shot of Al too, this was the one and only shot from tonight's session. I'm embarrassed to post it, but hey you can tell there's a fish and a pistol shrimp in the shot right? :o)
Yesterday morning the male T. nudus goby was back out with the female again so I knew immediately that the eggs must have hatched at some time during the night. He had been caring for them non-stop for the last 7 days without eating so I was expecting something to happen within the next two days. I checked on the tank 2 hours after lights out the previous night but there was no sign of any fry at that point. When I checked again in the morning there were a few tiny goby shaped objects floating around the tank and one was even still wriggling but it was swept away by the flow before I could reach for a pipette to catch it. Unfortunately the fry don't really stand much of a chance of surviving intact by the time I get up in the morning to look for them. The powerheads are so fierce and the fry are so delicate, not to mention that I now have a shoal of hungry Cardinals that are always on the look out for any tasty morsels that happen to float by. I expect that they had a breakfast feast yesterday and the Acanthastrea looked suspiciously happy too!
At least I took better notes this time so I'm fairly confident now that the egg incubation period is 7 days so maybe next time if I stay up late or get up really, really early I can actually catch and photograph some.....
Daddy Cardinal made it all the way to the end of the 6th day mouth brooding the eggs and then on the morning of the 7th day they were gone. Soooo, did he get a bit peckish overnight and eat the eggs or did the fry hatch out and he released them?? I just don't know, it's really quite frustrating. First I missed the Nudus goby fry and now the Cardinals too.
Talking of the Nudus gobies their latest attempt at spawning (maybe) ended at day 4 thanks to the pistol shrimp who decided to fill in the entrance to their cave again. Following that disruption the gobies went MIA for 4 days and then both reappeared as normal. I wish that they'd just move over to the left hand rock pile and then they wouldn't be bothered by the shrimp's digging activities at all.
.....or in this case pipework uncleaned. Pablo the Mexican Turbo snail getting some 'air' time.
Also today Hop the T. nudus goby is once again MIA and Skip is looking decidedly thinner today. Is this the beginning of the next breeding cycle I wonder? I can't wait to see what tomorrow brings and Skip looks positively thrilled about the state of affairs as usual.
For over a week (possibly 8 days, I can't remember exactly) Hop, the T. nudus goby, has been confined to the 'cave'. During that time I only saw him briefly at feeding times whereupon he would poke his head out of the cave and Skip would immediately chase him back inside again. Yesterday morning however he was back out on the sand again resting next to Skip like the previous eight days had never happened; so I assumed rightly or wrongly that if eggs were being cared for then they had now hatched. I searched and searched for any evidence of fry, checking the overflow box and sump/refugium too in case some had ended up in there, but could find none. Did the eggs hatch out at some point after lights out on Saturday night and end up as coral food/shrimp/crab food and/or were destroyed by the powerheads?? Or maybe there never were any eggs in the first place and Hop & Skip have simply kissed and made up now, lol!
I am so disappointed that I didn't get to confirm my suspicions that my gobies are indeed breeding but Skip has a nice round tummy again so hopefully she will lay again and I will not miss the next batch of babies.
I'll start with the 'red bug' coral first (Acro #2), it remains parasite free and is starting to extend its polyps again. It still needs to regain some colour but I'm sure that it will improve given time.
The Acropora that is suffering from blisters (Acro #3) looks about the same or maybe a little worse. It's still extending its polyps so it's really quite perplexing.
I performed as many water tests as I could last week in the hopes of picking up some obvious imbalance. The results were as follows:
Specific Gravity: 1.026
Iodide: <0.01ppm, Iodate/iodine: <0.03ppm
In the light of the results I have upped my KH/Ca/Mg dosing (again) as I've noticed a small downward trend now that there are more corals (plus a clam) in the tank. I have also begun to dose a small amount of Lugol's iodine every 3 days. I realise the Strontium level is low too but I want to retest that before deciding on a course of action. It was my first time using that particular test kit and, oh my, what a faff it was! I really hope I don't have to test for Strontium levels too often.
As for the gobies, they are endlessly fascinating and completely annoying at the same time. Poor old Gordon the Whitecap goby was chased out onto the sand by one of the T. nudus gobies (the darker one called Skip, who I've actually now renamed to Psycho Goby) for two nights on the trot. I know I wanted to see a bit more of him but not like that. He was swimming all over the tank, I feared I'd find him sucked over the weir or mangled by one of the powerheads the following morning. Fortunately on the evening of the third day of torment Al, the pistol shrimp finally reappeared. Had he been shedding and had gone into hiding for a few days as a consequence? Anyway he is back together with Gordon and they (well he certainly is but I've not seen Gordon since Friday) are now residing under the far right hand side of rockwork, keeping out of the way of Psycho Goby if they know what's good for them.
So now the T. nudus gobies are back in their old cave again and have taken over the pistol shrimp's old burrows. They do seem to have undergone a personality transplant which I think can only mean one thing, they are getting ready to breed (again?). Skip (AKA Psycho Goby) vanished into the cave late last week and was not seen for a day or so and now for the last two days Hop has remained hidden in the cave. From this behaviour and what I've witnessed before I am assuming that Skip is female and Hop is male. Poor old Hop is not allowed out of the cave now even to eat. At feeding time Skip snags loads of food, as bold as brass but Hop is simply not allowed to. He does appear at the cave entrance (only at feeding time though) but is promptly chased back in by Skip, she has become really quite aggressive towards him. At the last feed yesterday when she discovered his head popping out she turned really pale (almost white in fact), opened her mouth wide in a clear threat posture and chased him back in again. I guess his job now is to guard the eggs and nothing else lol! Clearly well and truly under 'the fin'. The only way to know if my assumptions are correct is to watch for the release of fry, I don't know how long goby eggs take to develop or at what time they normally hatch out. I expect it's most likely after lights out so I will be waiting with a torch in hand hoping to spot them.
Things have been pretty settled on the fish front recently but today that all changed, trouble brewing on the goby front. This morning I discovered both the T. nudus gobies sitting right outside the pistol shrimp's main burrow entrance, I've not seen this behaviour before. As the day progressed I actually observed them popping in and out of all the shrimp's burrow entrances/exits, something was certainly amiss here! There was no sign of the pistol shrimp or his Whitecap partner but they've gone missing before so I was not overly worried. That was until the afternoon, when Gordon the Whitecap goby suddenly popped right out of a hole in front of me. I mean the whole fish, not just the head but the whole body and tail too, I would have been beyond excited if it were not for the fact that he'd been chased out of the hole by one of the nudus gobies. What the...?! Where was his pistol shrimp buddy?? The Whitecap is such a timid fish, he's completely lost without his pistol pal. The lights are off now and he's been chased out on to the sand again. This is not good and I'm seriously worried about the whereabouts of the pistol shrimp. Has he died, perhaps through an unsuccessful moulting? If that's the case then I doubt Gordon will survive long without him. I really hope there's another explanation to the shrimp's absence and that he'll resurface again very soon.
On a lighter note I discovered two Stomatella sp. snails cruising about the tank in the last couple of days. I spotted one on the shell of the T. crocea clam when it was introduced but obviously there must have been two. Some good freebie hitchhikers at last!
Hi, my name is Lisa and I live in Derby, UK. I am a self-confessed reefaholic!