Kissing Gourami (Helostoma temminckii) Breeding Guide

Breeding Helostoma temminckii: an open-water egg scatterer that builds no nest, spawns under floating vegetation, releases about 1000 buoyant eggs and gives no parental care.

Overview

Helostoma temminckii is native to mainland Southeast Asia and the Greater Sundas, reaching up to 30 cm. Unlike most labyrinth fish in the trade it is an open-water egg scatterer rather than a bubble nester, and it does not build a nest or care for its young. Despite a 5-7 year average lifespan, it can exceed 25 years in captivity, and sexual maturity is reached at three to five years of age.

Sexing

Reliable external sexing is not documented for this species; both sexes show the same kissing or sparring behaviour, in which individuals meet mouths and push each other through the water. This rasping action is used by males to challenge the dominance of conspecifics and is not a courtship display.

Breeding Setup

Because spawning takes place under cover of floating vegetation, the breeding tank should include floating plants. In captivity, lettuce leaves placed on the water surface can serve as a spawning medium, providing the overhead cover the fish prefer.

Spawning Behavior & Trigger

Kissing gouramis are open-water egg scatterers, with spawning initiated by the female beneath floating vegetation. In nature spawning occurs from May to October in Thailand, at the beginning of the rainy season. Females release approximately 1000 eggs per spawning event.

Egg & Fry Care

The eggs are spherical, smooth and buoyant, each carrying a drop of oil that increases buoyancy, so fertilised eggs float to the surface. The adults do not guard them. Eggs hatch after about one day and the fry are free-swimming two days thereafter.

Common Challenges

The large adult size demands a correspondingly large spawning tank, and the late sexual maturity of three to five years means breeders must be fully grown before any attempt. Because there is no parental care, eggs and fry are vulnerable, so the floating cover and a separate rearing approach support survival.