disease

Saltwater and Reef

Marine Fish Diseases: Ich, Velvet, and Brooklynella

Marine ich, velvet and Brooklynella kill quickly and cannot be treated in a reef tank. Learn to tell them apart, respond correctly, and prevent them with quarantine.

September 14, 2026 10 minute read

Fish Care

Aquarium Fish Health: The Complete Care and Disease Guide

A complete hub for aquarium fish health: reading early warning signs, diagnosing common diseases, and treating without harming the tank.

July 29, 2026 9 minute read

Fish Care

Common Aquarium Diseases and How to Treat Them

Learn how to separate water-quality problems from common infections, document useful symptoms, quarantine safely, and avoid medication guesswork.

May 19, 2026 8 minute read