Freshwater Flounder Care Guide

Brachirus harmandi · Freshwater Fish

Freshwater Flounder
AI-generated illustration of Freshwater Flounder
Temperature
72-82°F
pH
7.2-8.5
Suggested tank
30+ gal
Origin
Southeast Asian rivers, estuaries, and coastal waters
Family
Soleidae

What Freshwater Flounder look like

Brachirus harmandi is a small sole with a flattened asymmetrical body and both eyes on the upper side. Its mottled brown pattern camouflages it against sand and fine gravel.

Behavior & temperament

Shop names imply simple freshwater care, but many so-called freshwater flounders do best in hard alkaline or low-end brackish systems. They need fine sand, subdued competition, stable water, and direct feeding because faster fish easily outcompete them.

Diet & feeding

Freshwater Flounders are bottom predators. Feed live or frozen bloodworms, blackworms, tubifex, brine shrimp, mysis, chopped earthworms, and small crustacean foods. Many refuse dry foods.

Behind the name

Brachirus means short hand or short limb; harmandi honors the collector or naturalist associated with the species description.

Plan your tank

Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.

Keeping Freshwater Flounder?

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