Aba Abbott's moray eel Abe's angelfish Abe's flyingfish Abrau sprat Abrolhos jawfish Abstract slope dragonet Abu mullet Abyssal assfish Abyssal cutthroat eel Abyssal grenadier Abyssal halosaur Abyssal rattail Abyssal smooth-head Abyssal spiderfish Academy eel Acadian redfish Acapulco flounder Acapulco major Acara paragaio Acara roi roi Acara Tucanare Acheloos roach Acheron spring goby Achilles tang Acned snake-eel Aconcagua grenadier Acoupa weakfish Acre corydoras Acute halfbeak Acute-jawed mullet Acutenose skate Adamson's goby Adamson's grunter Adana bleak Adelaide's weedfish Aden blenny Aden splitfin Adolf's catfish Adolf's eelpout Adonis shrimpgoby Adorned dwarfgoby Adorned wrasse Adriatic dwarf goby Adriatic sole Adriatic sturgeon Adriatic trout Aelita icefish Afele's dwarfgoby Africa rivergoby