invertebrate

My red tuxedo urchin died today and I was hoping to get some ideas as to why. I have had him for two weeks and he was doing good traveling the tank no spine loss. This evening I found his remains. He hadn't shown any signs of sickness no spine loss and was moving around last night. I've not been...

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Hey, folks! This is my first time posting, so I hope I'm in the appropriate space for help with ID'ing. This morning, as I was inspecting my tank I noticed a sort of "ant trap" in my fine sand. I tried to do relevant Google searches but couldn't find any info. I have noticed no feelers or...

Hello, Today I was cleaning my tank and found a Trochus snail I that I hadn't seen for awhile and assumed he had been eaten. I didn't pay much attention after that until I was looking in tonight and noticed the snail is upside down in its shell (It moves on its shell instead of the substrate)...

I have a tiger cowrie (his name is Howard) and was wondering if he could eat a blue photosynthetic plating sponge. I read they eat sponges, but the plating sponges contain the hard glassy material ( forgot what it was called.) Could it work?

I am looking into starting a tank for a pygmy octopus. Do any of you have experience keeping a pygmy octopus or even a larger sized one? If so, let me know. I would like to read your tank journal. I have a few questions off the bat. Please feel free to respond whether or not you have kept...

Was meaning to make a thread of the timeline of my nano tank for a while... Initial Wish List: 2 Pom pom crabs 1 Porcelain Anemone Crab 2 Skunk cleaner shrimp/fire shrimp 3 Sexy Shrimp 1 Emerald Crab 1 Halloween hermit crab 1 Bumblebee shrimp 1 Anemone shrimp (like a Pederson's) October 3...

Will harlequins go after brittle sea stars?

I want to add an easy care starfish to my 40 gallon breeder tank. It's been running for 2 years. So far no Corals, but will add in the future. I was thinking about a sand sifting starfish. Any suggestions. In my tank: Reef crabs Conch snail Turbo snail 2 clown fish 2 dartfish

I have a Reefer 350 that has been running for about five to six months, with three fish, a mini angel, a royal gramma and a damsel fish. I have tried all sorts of invertebrates and they just won’t survive. Snails, coral, an anemone and cleaner shrimp. My only living invert is a tiny blue hermit...