This fish lives mostly in overgrown waterways with minimal water flow, with females being silvery but during the breeding season males become iridescent silvery blue
Correct
An exclusively freshwater mammal with broad flippers and a long narrow beak with up to 39 pairs of upper and up to 35 pairs of lower, sharp teeth
Regarded as the domesticated ferret's ancestor, it has long, buff to black hairs with cream or yellow underfur visible between them and a "mask" across the face