You guys forgot about ghost fish in Halloween, now the fish in Winterfest. Not including Mr.Narwhal (already trainable), that's gingerbread fish, neon squid, swedish fish, Antarctic ice fish, glass piglet squid. A whole five fish that could have been trained. I know a lot of people were waiting to finally put their perfect winter fish to use once winterfest arrives, but damn this really is a disappointment.

I think this shows that our list of fish/crabs that can't be trained won't ever be reduced

Current list of fish/crabs that can't be trained:
(​​orca, ghost fish, gingerbread fish, neon squid, swedish fish, Antarctic ice fish, glass piglet squid, alaskan king crab, hermit crab, purple shore crab, lobster, crawdad)