Species profile
Rainbow Shark
Epalzeorhynchos frenatumRainbow Shark (Epalzeorhynchos frenatum) is a solo centerpiece fish for a cycled 55+ gallon freshwater aquarium. Plan for about 6 inches as an adult, 74-80°F water, pH 6.5-7.5, and moderate care. Keep only one per tank, and choose tankmates with matching water needs and low aggression.
TerritorialHigh energyModerate care
55 galMinimum tank
6 inAdult size
1Schooling minimum
74-80°FTemperature
Water Range
- pH
- 6.5-7.5
- GH
- 5-15 dGH
- KH
- 3-10 dKH
Behavior
- Temperament
- Assertive
- Fin nipping
- 2/5
- Territory
- 4/5
Diet and Care
- Diet
- omnivore
- Diet difficulty
- 1/5
- Care difficulty
- 3/5
Planning Notes
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These matches are starting points with overlapping water ranges and lower behavior risk. Always check the full stocking plan, tank size, and group counts before buying.
Run Rainbow Shark through the checker with your tank size, cycle status, water, group count, and tankmates before buying.
Check my tankCompare this speciesPut Rainbow Shark beside another profile to compare water range, size, diet, schooling needs, and behavior.
Open comparisonWill plants work?Match Rainbow Shark against aquarium plants for nibbling, uprooting, cover, flow, and water-range flags.
Open plant matchAsk about my setupAsk Advisor how Rainbow Shark fits with your current tank, recent logs, plants, and livestock.
Ask AdvisorView native rangeOpen the origins map to see reviewed native-range coordinates and regional context for Rainbow Shark.
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