Guides

Disease

8 articles · All guides

Fungal Infections on Aquarium Fish

White fluffy growth on fish or eggs is fungal — it attacks weakened tissue, not healthy scales on pristine water.

Bulging eyes signal fluid behind the orbit — identify whether one fish had a fight or the whole tank has water problems.

Pits on the head and lateral line in cichlids signal hexamita and husbandry stress — fix water and diet alongside medication.

A fish stuck at the surface or on the substrate often has swim bladder distress — diet and water quality fix many cases.

Dropsy is a symptom not a disease — swollen bodies and raised scales mean internal failure, often with low recovery odds.

Columnaris strikes fast — white mouth patches and saddle lesions need immediate water fixes and targeted antibiotics.

Fin rot starts at the edges — catch water quality problems early before infection reaches the body.

A practical guide to spotting, treating, and preventing ich — the classic white-spot disease that spreads quickly when fish are stressed.