How-To Guide
Breeding Tank Setup
A breeding tank should be small enough to manage closely, with a mature sponge filter, stable water suited to the species, and the right spawning site, such as plants, mops, caves or flat stones. Prepare first foods and a way to protect eggs and fry before the adults spawn.

What a Breeding Tank Needs to Accomplish
A breeding aquarium should give adults an appropriate spawning environment while making eggs, larvae, or fry easier to protect and feed.
Choosing the Tank Size and Layout
The correct breeding-tank size depends on adult size, courtship behavior, spawning method, brood size, and how long juveniles will remain there.
Filtration and Oxygenation
A mature sponge filter is widely useful because it provides biological filtration and gentle circulation without exposing tiny fry to a strong intake.
Water Parameters and Conditioning
Breeding water should match the species rather than a generic recipe, and stability is usually more important than chasing an exact number unnecessarily.
Spawning Sites and Cover
Caves, mops, broad leaves, fine plants, flat surfaces, or open substrate may be needed depending on how the chosen species deposits and protects eggs.
Preparing for Eggs and Fry
First foods, nursery space, water-change tools, and intake protection should be ready before spawning because tiny young may need care immediately.
Maintaining a Breeding Tank
Small frequent observations, controlled feeding, waste removal, and careful water changes help maintain water quality without disturbing eggs or fry.
Frequently Asked Questions
What Size Should a Breeding Tank Be?
It depends on the species. Small fish often breed in 20 to 40 litres, while larger fish need more.
What Filter Is Best for a Breeding Tank?
A mature sponge filter. It is gentle and will not suck up eggs or fry.
Do Breeding Tanks Need Substrate?
Not always. A bare bottom is easier to clean, but some species need plants, sand or caves to spawn.
Should Adults Stay in the Tank After Spawning?
Many egg-eating species should be removed after spawning, while parental species such as many cichlids care for their young.