Swipes the Porcelain crab has been beefing up! She shed her exoskeleton again yesterday and yet again fooled me into thinking she'd died. The shedding looks so much like the real thing it's incredible. After checking that she was indeed still alive and back in her usual spot I removed the skeleton for further inspection.
Fortunately I had kept a previous shedding from July last year, so I could compare the two to see how much she's grown over the last six months. The first skeleton is bleached and falling apart but you can clearly see how much bigger she is now. As far as I am aware she has moulted twice more in between these, so about 2 months between each shedding. Clearly she's finding enough food to filter out.
Just a quick iphone video of Swipes doing her thing. She is just the coolest little crab waving her fan like mouth-parts around all day long. She is a completely peaceful filter feeder and her large claws are only used in territorial disputes with other crabs of the same species, not an issue here since she is going to be the only one I intend to keep. The rate of sieving for planktonic food increases dramatically just after the fish and/or corals have been fed.
I am pleased to report that Swipes the porcelain crab is back out again after moulting. She's bigger and more colourful now too so I'm assuming that means she's settled into her new home and is managing to find (filter) enough food to sustain her.
I found this in my tank this morning, the question is has Swipes gone to a better place or has she moulted? I'm thinking (definitely hoping) that she's moulted. The carapace has lifted in a way that I think is consistent with moulting. There's no sign of her in her usual feeding spot, but that's to be expected if she's hiding out and waiting for her new shell to harden. Fingers crossed that she's fine and will reappear again soon sporting a beautiful new skeleton!
Everything seems to be ticking along nicely at the moment. The KH dipped a little following the addition of the carbon dioxide filter and I've had to up my dosing rate as a consequence. I'm hoping it means that the corals are happier with the higher pH values and have increased their growth rates. Unfortunately perhaps, also due to the dip in KH (down from approx 7.0 to 6.5), the coralline on the back wall took a bit of a beating. It's not a problem as such but clearly I need to keep a better eye on the alkalinity level.
Swipes the porcelain crab, Petrolisthes galathinus, has settled in nicely and is proving to be a star attraction with the rest of my family (after Lurch the conch, who still remains the absolute favourite inhabitant). She has made her home underneath the left-hand rock pile and spends the majority of her time hanging out with Edna & Kylie (the two wrasses), filtering out small morsels of food from the water.
Ming, the Pom Pom crab (Lybia sp.) has also settled into the left-hand rock pile, in a small hole, way under the ledge. He's still pretty shy and we don't get to see him out in the open very much as of yet, I did manage to capture a sneaky shot of him in his hidey hole using flash today however.
It's pretty time consuming trying to take individual photos of all the corals individually on the same day so there just a small selection below, I'll work on adding the rest later in the week hopefully.
To finish, I just have to share a couple more shots of Crystal the Red Spotted cleaner shrimp, Urocaridella antonbrunnii, because she is the most incredible looking shrimp.
I went away this weekend and managed to find the time to visit a few not so local fish shops (as the reef-obsessed tend to do given the opportunity). In the 3rd shop I struck gold and located the Porcelain crab (Petrolisthes galathinus) I've been searching for since I first set the tank up. She is one of the hitchhiking species that are sometimes found in live rock. I used to have one of these peaceful filter feeding crabs in my old tank and knew I wanted one for this tank too. When I arrived back home everything in the tank seemed fine and my crab (a female according to the shape of her abdomen) was duly acclimated and introduced just before the lights went out.
This morning I eagerly rushed down to check on my new crab only to discover that the curse of the Red Spot Cardinalfish had struck again. Another one of them had died, this time I discovered the body, the Lobophyllia was trying its best to eat it! The meal turned to be too much for the small coral to stomach and I was able to remove the dead fish using a pair of tongs. It was at this time that I happened to notice a small shape lying on the carpet to the side of the tank. Closer inspection showed it to be Gordon my Whitecap goby, nooooooo! He had jumped out of the tank at sometime during the night. I do have a mesh lid on the top to prevent any jumpers but somehow he still managed to find a way out, he was a very small fish after all. There is no doubt in my mind that he jumped as a direct result of the persecution by the Nudus gobies. The female in particular went out of her way to terrorise him at every opportunity. I have no idea what will happen to Al the pistol shrimp now and I dare not introduce another Whitecap as the same thing could happen all over again. He's going to have to make do on his own from now on and I expect I won't see him nearly as much as when Gordon acted as lookout for him. I feel so very, very sad today.
Hi, my name is Lisa and I live in Derby, UK. I am a self-confessed reefaholic!