Aquarium Wing

Clownfish the Marlin and the Trevali-ing Circus
Clownfish the marlin (fanart in some ep before ep 12) bc marlin from finding nemo Giant trevally

And the Trevali-ing Circus

BoJack Horse mackerel and the Boys
BoJack Horse mackerel Horse mackerel (FANART) and the boys (the sardines) mack and the boys from cannery row and bojack horseman

C3P-Oro
(Dorado, dolphinfish, mahi mahi) Mahi-Mahi

R2DTuna
refrencing R2D2 Tuna

No regerts (et al) the remora
(long name ragrets, egrets, some regerts, slight regrets, rugrats, regretti- all permutations allowed)

caught off stream first appeared in ep12 remora

Baby the Whale-shark
Caught in ep12- as requested by celestinakitty who said “if we don't name one shark Baby imma be mad” Whale-shark Refrencing the infamous ear worm "Baby Shark"

Caudal Peduncle
Dory’s name (surgeon fish we learned the true significance of in ep12 from Rachel) surgeonfish