Fish
Dive into the underwater world of fish - from tropical reef dwellers to deep sea creatures.
No animals found for this category.
About this group
Fish are aquatic vertebrates that typically breathe through gills and move using fins. This collection focuses on ray-finned fish, including freshwater and marine species.
Species guides
- Brown Trout
Salmo trutta
Identification practice
Compare these sourced clues with the photograph. Color can vary and some traits are shared by other species; use several visible details together.
Brown Trout(Salmo trutta)
Often olive-brown above with dark spots and reddish spots on the sides. Young fish have dark oval side markings.
Redbreast Sunfish(Lepomis auritus)
A yellow, orange or rusty belly and a long, narrow flap extending back from the gill cover.
Reference: Texas Parks and Wildlife Department
Yellow Perch(Perca flavescens)
Usually golden-yellow as an adult, with six to eight dark vertical side bars and two dorsal fins.
This group is preselected. Choose a difficulty, then identify photos from our curated collection. Individual species are picked at random.