Fishmetry official logo

The Complete Aquarism Glossary

Decode the jargon. Everything you need to know about fish keeping, from "Ammonia Spikes" to "Zebra Danios".

All Terms Anatomy Aquarium Problems Equipment & Hardware Filtration & Water Flow Physiology
Tank Setup
Water Parameters

F

Freshwater vs Saltwater
Tank Setup
Freshwater and saltwater aquariums differ in salinity, fish species, plants, and maintenance requirements, affecting tank setup and care.
Learn more

P

Partial Water Change (PWC)
Tank Setup
A Partial Water Change (PWC) is the routine removal and replacement of a portion of aquarium water to dilute toxins, stabilize parameters, and maintain fish hea
Learn more

S

Substrate
Tank Setup
Substrate is the material covering the bottom of an aquarium, providing habitat for beneficial bacteria, plants, and bottom-dwelling fish.
Learn more