Rainbow Characodon

Characodon lateralis

Rainbow Characodon (Characodon lateralis) — Intermediate care, Semi-aggressive, under Other. Minimum tank in the app: 19.8 US gal min; aim for 64–75°F and pH 7–8.5. Details below match the app.

Rainbow Characodon (Characodon lateralis) in a planted freshwater aquarium
Care levelIntermediate
TemperamentSemi-aggressive
Min tank size19.8 US gal min
pH range7–8.5
Temperature64–75°F
Max size2.0 in (5.0 cm)
Captive lifespan2–5 years
SchoolingYes · 5+ recommended

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

North America (Mexico)

  • Central America & Mexico

Regional colours match the stocking calculator’s origin map.

Rainbow Characodon Tank Setup

Plan for at least 19.8 US gal min of water—that is the minimum in our database for a workable setup, not a challenge to crowd fish. Aim to hold 64–75°F and pH 7–8.5 without daily drama. These fish use the Mid zone most, so put wood, plants, or open water there accordingly.

What Do Rainbow Characodons Eat?

We record diet as Omnivore. Offer a few food types that match—dry, frozen, or gel—and swap now and then. One flake every day for a year is how dull color and gut trouble creep in.

Rainbow Characodon Tank Mates

Temperament in the data: Semi-aggressive. Flagged as a fin nipper, so long flowing fins and slow targets are a poor match. Best in species tank; may nip Plug your full stock list into the stocking calculator—single-species compatibility scores are hints, not a whole-tank verdict.

Are Rainbow Characodons Good for Beginners?

We rate this as intermediate. Budget time for testing, maintenance, and watching behaviour if the water looks fine but the fish do not. If this would be your very first tank, start with something more forgiving and come back to this one.

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.