This tool provides a general estimate and does not replace professional veterinary advice.
Updated · How we check our tools
What is the Cichlid Tank Size Calculator?
The Cichlid Tank Size Calculator recommends minimum tank size in liters or gallons for keeping cichlids. Undersized housing is one of the most common and most fixable welfare problems in pet keeping, it affects everything from stress levels to exercise to litter/waste management.
A well-cared-for cichlid usually lives somewhere between 8 and 12 years. They are an omnivore, so their nutritional needs shift with age, size and activity. Cichlid needs vary sharply by origin: African rift lake species want hard alkaline water and rockwork, South American species want soft acidic water. Most are territorial and need stocking planned to spread aggression. Keep an eye out for Malawi bloat, aggression injuries, hole-in-the-head disease. These are the conditions cichlids are most commonly seen for.
Cichlid quick facts
| Measure | Cichlid |
|---|---|
| Typical lifespan | 8–12 years |
| Diet | Omnivore |
| Mature at | About 1 years |
| Clutch size | 300–600 eggs |
How does the Cichlid Tank Size Calculator work?
The recommendation is based on published care-guide minimums for cichlids, scaled to the animal's current or expected adult size. Use it to know roughly where you stand and what to ask about, not to rule anything in or out on its own.
Factors that matter
- Adult size: housing should be sized for the animal's full-grown dimensions, not its current size if still young
- Number of animals being housed together, since space needs don't simply divide evenly
- Activity level and natural behavior, such as climbing, digging or swimming space
- Whether the space is temporary (travel/carrier) or permanent (everyday housing)
How do you use the Cichlid Tank Size Calculator?
- Enter the adult body length in whichever unit you use (in, ft, cm)
- Answer "How many of this species?"
- Pick your filtration and planting (Standard filter, no live plants, Strong filter or heavily planted, Minimal filtration)
- Press Calculate, then read the result alongside the sources listed below
Worth doing: jot down the date and the result each time. A single number tells you little, but a trend across a few months tells you a lot about your cichlid.
For related questions, see the other housing tools or browse every cichlid tool.
Before you rely on this
Averages hide a lot of variation. The figure here reflects what is typical for cichlids, but your cichlid may sit well outside it for perfectly ordinary reasons. Use the result to spot changes over time in your own animal rather than to compare it against other people's pets.
Sources and references
The formulas, reference ranges and species data behind the Cichlid Tank Size Calculator come from these veterinary references, professional bodies and published research.
- RSPCAAdvice and Welfarerspca.org.uk(opens in a new tab)
- Merck Veterinary ManualExotic and Laboratory Animalsmerckvetmanual.com(opens in a new tab)
- pdsa.org.ukPDSA Pet Health Hubpdsa.org.uk(opens in a new tab)
- University of Florida IFAS ExtensionAquacultureedis.ifas.ufl.edu(opens in a new tab)
- Merck Veterinary ManualRoutine Care and Breedingmerckvetmanual.com(opens in a new tab)
- Built on veterinary referencesFormulas and ranges come from veterinary manuals, university research and welfare bodies, listed above for you to check.
- Instant resultsNo page reload, no waiting and no account. Enter your details and the result appears straight away.
- Private by designCalculations run in your browser. Nothing you enter is stored on our servers or shared with anyone.
- Always freeEvery XpertsPet tool is free to use, with no premium tier and nothing to sign up for.