"water bath"

These red marine bivalves are fascinating to observe as they propel themselves forward by expelling jets of water.

Pimephales promelas. Nonaggressive. Highly adaptable and easy to maintain, minnows make good water pollution indicators. Care instructions are included. Size: 2". Package of six.

Study the lifecycle of the brown house cricket (Acheta domesticus) with this complete culture kit ideal for behavioral studies, food for insectivorous animals, or both.

Culture your own specimens for a constant supply of Daphnia magna to feed your fish, or to study.

Large embryos with a clear coating makes them ideal for observing development.

Large embryos with a clear coating makes them ideal for observing development.

Hippodamia convergens.

For consistent readings underwater.

Fast and easy-to-use, this kit contains two dropper bottles for accurate dispensing of test solutions, non-staining test tube with snap cap, and instructions. It comes with enough solution for 130 tests and can be used in either fresh or salt water. Range: 0–8 ppm ammonia.

Rotifers are well adapted to adverse conditions; when dry, the eggs remain viable for years.

Complete Equipment for 5- to 10-Gallon Aquariums

Use this cone-shaped fine-mesh nylon net to let water pass while you filter out plankton.

Waterproof Unit Is Completely Safe, Even When Wet

Raise Large Fish With A Low-Maintenance System

Simplify aquarium setup.

Give your fish a place to play!