If you keep aquatic amphibians, turtles or fish then you will almost certainly have used live aquatic food at some point. Bloodworm and River Shrimp are more suited when feeding larger aquatic amphibians, turtles and predatory fish. Brine shrimp, Copepods, Daphnia, Glassworms, Nauplii and Tubifex are best used for newly hatched amphibians (such as newts) and small fish species and fry. Mysis shrimp are the first choice live aquatic livefood for marine fishkeepers. Packed full of protein they are excellent for growth and good health.