- Catfish
Ictalurus punctatus
- Buffalofish
Ictiobus cyprinellus
- Buffalofish
Ictiobus cyprinellus
- Black Dragonfish
Idiacanthus fasciola
- 埃維氏條鰍
Indoreonectes evezardi
- Armoured stickleback
Indostomus paradoxus
- Bearded ghoul
Inimicus didactylus
- Cigar shark
Isistius brasiliensis
- Flower of the wave
Iso rhothophilus
- Atlantic sailfish
Istiophorus platypterus
- Arctic bonito
Katsuwonus pelamis
- Samoan sand dart
Kraemeria samoensis
- Mangrove Rivulus
Kryptolebias marmoratus