What Type of Shroom?

:biggrinbo Its crazy after 4 years I cant find this info ....but can anyone suggest what type or "name" of this large shroom is? (upper left in pic). Hes awesome ....doubled in size on 6 months! Pic doesnt show his truly vibrant green/ yellow/ pink colors ...hes cool!

 

Looks like it could be a Rhodactis.

Great looking shroom.

 

Fish eater, not cool

 

Thanks Neighbor and 2in10 ...looking at web images upon your suggestions, he looks closest to a Rhodactis. He hasnt moved from the rock that he came on ...and he hasnt harmed anything ....hes the neatest thing! Thanks again for your input ...very helpful!

 

looks entirely possible neighbor. Hes definately not aggressive, nor has he eaten any fish ...or fish food for that matter (I feed a mix of frozen bloodworms/ mysis) ...he just sits there and grows. His color intensifies every evening, an hour after I add phytoplankton.