True Percula Clownfish Breeding Guide

How to breed Amphiprion percula: forming a pair, demersal substrate spawning near the host, male egg tending, and rearing larvae on rotifers then Artemia.

Overview

Amphiprion percula is one of the most reliably captive-bred marine fish. It is a protandrous hermaphrodite: every individual matures first as a male, and the largest fish in a group becomes the dominant female. A breeding group consists of a female (largest), a breeding male (second largest), and zero to four progressively smaller non-breeders. If the breeding female dies, the breeding male changes sex to female and the largest non-breeder matures into the new breeding male.

Sexing

Sexes cannot be told apart by color in immature fish. Because the species is protandrous, sex is determined by social rank and size rather than fixed at birth. The simplest path to a pair is to raise two juveniles together; the larger one will develop into the female and the smaller into the breeding male. Established pairs maintain a strict size-based dominance hierarchy.

Conditioning

Reported spawning water temperatures range from about 25 to 28 degrees Celsius. A bonded pair held in stable reef conditions and fed frequently on a varied diet will spawn repeatedly. A host anemone is not required for spawning in captivity, but a flat vertical surface near the chosen territory is used as the nest site.

Spawning Behavior & Trigger

Spawning correlates with the lunar cycle. The male courts the female with fin extension, biting, chasing, and rapid vertical swimming. Eggs are laid in the evening on flat rocks or similar substrate positioned near the anemone host for protection. Depending on female size, a clutch contains roughly 400 to 1500 eggs per cycle.

Egg & Fry Care

The male is highly protective, continuously fanning the eggs to circulate oxygen and removing unfertilized or deteriorating eggs; the female may assist with nest maintenance. Eggs hatch in 6 to 8 days, shortly after sunset and usually on a very dark night. In the wild the larvae are pelagic, drifting in open water and feeding on plankton for about a week before settling. In captivity larvae are reared on small live foods, beginning with rotifers and progressing to Artemia nauplii as they grow.

Common Challenges

The main difficulty is the planktonic larval stage: newly hatched larvae are tiny and require a dense supply of correctly sized live food and stable water quality during the first weeks. Pairs may eat early clutches before settling into a reliable spawning rhythm. The expected breeding tenure of a female is roughly 12 years, so a stable, undisturbed pair can produce clutches for many years.