Inpa tube-snouted ghost knifefish Inquiline snailfish Inscribed wrasse Inshore hagfish Inshore lizardfish Inshore sand perch Insignia prawn-goby Insular bunquelovely Insular pipefish Insular shelf beauty Intermediate cardinalfish Intermediate flounder Intermediate flyingfish Intermediate lightfish Intermediate scabbardfish Intermediate sillago Interrupted dartfish Investigator pipefish Iowa darter Iran cave barb Iraq blind barb Irian Jaya rainbowfish Iridescent cardinalfish Iridescent glassy perchlet Irina’s pygmygoby Irish mojarra Irish pollan Irksone eel Ironcolor shiner Irrawaddy river shark Isbrücker's Hypopygus Ishikawa's sculpin Işıklı gudgeon Isis goby Island cowfish Island frillfin Island frogfish Island goby Island gregory Island grouper Island gudgeon Island gurnard Island hogfish Island kelpfish Island longfin Island mackerel Island major Island trevally Island triplefin Isle of Pines rivulus