Spawning is sometimes seen in aquaria but no one has raised the fry. Tiny larvae drift to the sea, grow there for months, then climb back up streams as juveniles.
Not applicable.
Mature tank with strong current and rocks.
Not applicable.
Females can lay as many as 10,000 tiny (~0.5 mm) eggs at once, stuck under rocks and guarded by the male; they hatch in under 24 hours.
Marine larvae.
Strongly different sexes. Males are greyish with a bright blue to green stripe along the side and a reddish edge to the first dorsal fin. Females are much paler with a dark zig-zag stripe along the side.