Common name
Rainbow cichlid
Scientific name
Herotilapia multispinosa
Category
Freshwater fish
Group
Central American cichlids
Environment
Freshwater
Origin
Atlantic-slope drainages of Nicaragua and Costa Rica, including the San Juan system
Care level
Intermediate
Adult size
Commonly 10–15 cm; published maximum about 17 cm total length
Expected lifespan
About 7–10 years
Minimum housing
At least 180 L for a compatible pair, with additional space for tankmates
Temperature
22–28 °C
pH
6.5–8.0
Hardness / minerals
Moderately soft to hard
Salinity
Freshwater
Lighting
Moderate, with shaded territories
Placement / swimming zone
Lower and middle water

Identity and search names

Single-species profile for Herotilapia multispinosa. Archocentrus multispinosus is a widely encountered former combination. Search names include Rainbow cichlid, Archocentrus multispinosus, Herotilapia multispinosa.

Environment and housing

Mature aquarium with sand or fine gravel, robust wood and stone boundaries, open feeding space, protected plants and efficient filtration

Feeding and nutrition

Feeding ecology: Omnivore with a substantial herbivorous component; plant-rich pellets, algae, vegetables and invertebrate variety

Feeding routine: Feed measured varied portions once or twice daily and avoid a permanently high-protein diet

Breeding and reproduction

Open-substrate spawner. A bonded pair cleans a rock or other firm surface, lays eggs and jointly guards eggs, larvae and free-swimming fry.

Parental care: Biparental; both adults defend and tend the brood

Detailed husbandry

Identity scope
Single-species profile for Herotilapia multispinosa. Archocentrus multispinosus is a widely encountered former combination.
Adult size and space
Commonly 10–15 cm; published maximum about 17 cm total length. At least 180 L for a compatible pair, with additional space for tankmates. Plan around adult dimensions, activity, social structure, aggression and waste production rather than sale size.
Social structure
Compatible pair or a carefully structured group in much larger housing
Swimming zone
Primary zone: Lower and middle water. Keep that zone usable for movement, feeding and refuge.
Feeding ecology
Omnivore with a substantial herbivorous component; plant-rich pellets, algae, vegetables and invertebrate variety
Feeding plan
Feed measured varied portions once or twice daily and avoid a permanently high-protein diet
Water stability
Maintain 22–28 °C; pH 6.5–8.0; hardness/minerals: Moderately soft to hard. Stable oxygenation and nitrogen-cycle control matter more than chasing one exact number.
Habitat structure
Mature aquarium with sand or fine gravel, robust wood and stone boundaries, open feeding space, protected plants and efficient filtration
Compatibility plan
Choose robust peaceful fish with room to leave a breeding territory; remove tankmates if a pair repeatedly pins or injures them
Breeding plan
Open-substrate spawner. A bonded pair cleans a rock or other firm surface, lays eggs and jointly guards eggs, larvae and free-swimming fry. Parental care: Biparental; both adults defend and tend the brood.
Quarantine
Quarantine new fish in a separate cycled aquarium with dedicated equipment. Match temperature and mineral chemistry gradually, confirm feeding, respiration, skin, fins and waste, and never add transport water to the established aquarium.
Welfare checks
Maintain the stated adult space and social structure, verify feeding and intervene early when injury, exclusion, weight loss, abnormal respiration or altered behaviour appears. Its colour can change dramatically with mood and breeding, but the welfare issue is territory: a spawning pair can make an undersized community unsafe.
Biosecurity and release
Never release fish, fry, eggs, aquarium water, sediment, plants or live foods into drains, dams or natural waterways. Confirm current Australian import conditions and South Australian possession, trade and movement rules before acquisition or transfer.
Main risk
Its colour can change dramatically with mood and breeding, but the welfare issue is territory: a spawning pair can make an undersized community unsafe.

Welfare and risk

Main risk

Its colour can change dramatically with mood and breeding, but the welfare issue is territory: a spawning pair can make an undersized community unsafe.

Maintain the stated adult space and social structure, verify feeding and intervene early when injury, exclusion, weight loss, abnormal respiration or altered behaviour appears. Its colour can change dramatically with mood and breeding, but the welfare issue is territory: a spawning pair can make an undersized community unsafe.

Sources