Redhook
Myloplus rubripinnis
Redhook (Myloplus rubripinnis) — Varies care, Peaceful, under Other. Minimum tank in the app: 70 US gal min; aim for 73–81°F and pH 6.5–7.5. The Redhook is a visually striking choice for those who appreciate mid-water swimmers with personality, suited for larger setups.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
South America
- South America
Regional colours match the stocking calculator’s origin map.
Redhook Tank Setup
Aim for a spacious tank with ample swimming room complemented by strategic cover, such as plants or driftwood, to diffuse aggression. A moderate water flow mimics their natural habitat, while a neutral to slightly acidic substrate can help maintain water quality. Lighting should be moderate to highlight their coloration without inducing stress.
What Do Redhooks Eat?
Redhooks are enthusiastic eaters and may compete for food; thus, offering a varied diet is key to maintaining health and vibrant coloration. Monitor feeding times to ensure all fish get their share, as their active nature can lead to dominant individuals outcompeting others for resources.
Redhook Tank Mates
Ideal companions include similarly sized, semi-aggressive species that occupy different vertical zones, such as larger tetras or certain cichlids. Avoid overly timid fish that could provoke bullying, as well as smaller species that may become targets. Intraspecies dynamics tend to be peaceful, provided there's ample space and hiding spots to establish territories.
Are Redhooks Good for Beginners?
Care demand varies with setup and individual fish; use the numbers above as your baseline. Aquarists often underestimate the importance of tank size and filtration, leading to poor water quality and stress. Overcrowding and inadequate hiding spots can escalate aggression and territorial disputes.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




