what the heck Is That?

[mww00ds]

Welcome back to the tonight game of what the heck Is That?!

I'd like to welcome back our contestants to the game. And as well all know tonight prize is?..... Well nothing, but bragging rights LOL

So found these odd yellow creatures in my sump tonight while doing a water change. Now when I tossed that dead bi-valve into my sump ( less then 4-6 months ago) this guys weren't there, or if they where they where very small. Both have a hard calcium shell, that are somewhat circular with spine like off shoots. Both are yellow, but one fades into a maroon reddish color. They are roughly a half inch in diameter. I'm thinking they are either some kind of bi-valve or barnacle??

 

[vetteguy53081]

Welcome back to the tonight game of what the heck Is That?!

I'd like to welcome back our contestants to the game. And as well all know tonight prize is?..... Well nothing, but bragging rights LOL

So found these odd yellow creatures in my sump tonight while doing a water change. Now when I tossed that dead bi-valve into my sump ( less then 4-6 months ago) this guys weren't there, or if they where they where very small. Both have a hard calcium shell, that are somewhat circular with spine like off shoots. Both are yellow, but one fades into a maroon reddish color. They are roughly a half inch in diameter. I'm thinking they are either some kind of bi-valve or barnacle??

These are indeed Bivalves and are seen often amongst zoa and coral. They are filter feeders and often not long lived and some call them clams but theyre actually a member of the scallop grouping

 

[ISpeakForTheSeas]

Probably a jewelbox clam (taxonomic family Chamidae), but possibly a thorny oyster of some kind (Spondylus genus).

 

[mww00ds]

Thank you @vetteguy53081 and @ISpeakForTheSeas

 

[EeyoreIsMySpiritAnimal]

Thank you @vetteguy53081 and @ISpeakForTheSeas

@ISpeakForTheSeas is the best!