If this is unacceptable, please let me know. It is not a fish, rather a crustacean. It is currently about 1/2 inch long. They live about 6 months in temporary pools like fairy shrimp and Triops. This one is genus Cyzicus, I have yet to identify what species. Photo taken with a Canon A400 3.2 mp. 1 good photo out of about 50 blurry ones.