Breeding the Fire Shrimp (Lysmata debelius)

Lysmata debelius is a hermaphroditic Indo-Pacific cleaner shrimp whose pairs yield weekly batches of planktonic zoea, with a long larval phase that makes home rearing challenging.

Overview

Lysmata debelius is an Indo-Pacific cleaner shrimp first described from the Philippines in 1983, growing to about 3 cm. It is more secretive than L. amboinensis but follows the same reproductive pattern, and captive larval observations exist, so breeding attempts are documented even if difficult.

Sexing

The species is hermaphroditic, so any two individuals may mate and reciprocally fertilise. There is no need to identify males and females; a compatible pair forms simply by housing two settled adults together in a stable reef.

Conditioning

Steady reef conditions (about 24–26 °C, pH 8.1–8.4) with regular feeding sustain the breeding cycle. Established pairs reproduce on a recurring schedule rather than seasonally.

Spawning & Berried Females

The hatching, moulting and copulation cycle is described as identical to that of L. wurdemanni, with each pair yielding weekly batches of zoea. The egg-carrying partner broods the clutch on its pleopods after each post-moult mating.

Larval Care

The hatched larvae are planktonic and pass through a long series of zoeal stages before settling. Rearing notes for fire-shrimp larvae emphasise live moving prey: rotifers and Artemia in the first week alongside co-cultured phytoplankton, then enriched Artemia and pureed seafoods as larvae grow.

Common Challenges

As with other Lysmata, the extended planktonic phase causes heavy larval losses, and the secretive adults may breed unnoticed in a busy reef. Sustaining clean live-food cultures and a dedicated larval vessel for the full development period is the limiting factor.