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No federal permit to keep

Happy Cichlid

Laetacara fulvipinnis

Also known as Orange Fin

Fishes › Cichlids (Cichliformes) › Cichlidae (Cichlids)

Care follows the south american dwarf cichlids guide below.

Aquarium hobby
Experience: Easy
Happy Cichlid
Photo: no rights reserved, CC0, via iNaturalist
FamilyCichlids
Adult lengthup to 3 in
WaterFreshwater

Care at a glance

Species-specific aquarium care

  • Tank: At least 24 in long and 12 in front to back for one adult (adults commonly reach about 2.9 in / 7.4 cm).
  • Water: Freshwater.
  • Layout: Lives on or near the bottom: floor space and hiding places matter more than height.
  • Availability: Rarely or never seen in the aquarium trade; expect to source it from specialists or not at all.

Calculated from this species' own FishBase record: tank size from its typical adult length and swimming zone, water values from its recorded ranges. The group guide below fills in general care.

Care guide

Species care notes

  • Water: soft, acidic water, 68–82 °F, pH 4–7, 1–12 dGH.
  • Behaviour: in a pair; suited to a community tank.
  • Difficulty: Beginner (Seriously Fish rating).

Short excerpts from the species profile:

  • Diet: “Wild fish are probably foragers feeding on algae, organic detritus, small insects, worms, crustaceans, and other zooplankton.”
  • Breeding: “Biparental substrate-spawner which deposits its eggs on a solid surface such as a plant leaf.”

From the Seriously Fish profile for this species, which has the full habitat, maintenance, diet, behaviour and breeding write-up 167

Group care guide

South American dwarf cichlids

Applies to most species in this group. Habitat: Soft, acidic, leaf-littered streams. Individual species can differ, so compare with the species numbers above and the linked sources.

Housing & setup

  • Use species-specific water chemistry and tank base dimensions: M. ramirezi has a source minimum base of 60 × 30 cm; M. altispinosus has 90 × 45 cm. Provide fine sand for these substrate-sifting species.
  • Very sensitive to nitrate and water swings; mature, stable tanks are best.

Sources 117119164257258

Climate & lighting

Starting point only: Replace the merged genus range with separately sourced species water temperatures. Check the species-specific values for this animal where shown.

Water76–84°F

Sources 117119164257258

Diet

  • Small live and frozen foods (bloodworms, brine shrimp, daphnia) plus quality micro pellets.

Sources 117119164257258

Social life

  • Harems or pairs; peaceful with small dither fish.

Sources 117119164257258

Health watch

  • Use mature, stable aquaria. Warm-water M. ramirezi has a source maintenance range of 27–30 °C (81–86 °F), whereas M. altispinosus has 24–28 °C (75–82 °F).

Sources 117119164257258

Understanding the animal

This species is part of a group that hobbyists, aviculturists or zoos keep widely (Cichlids), so it's included for completeness. It may be rare in captivity itself, or not kept at all. Use the group guide as a starting point and look for species-specific advice from experienced keepers.
In the wild

In the wild

From this species’ own FishBase record (habitat, bottom type, water and breeding data), not its family. Good care copies these conditions.1

Where it livesLives in freshwater. Stays near the bottom. Prefers typical blackwater habitats with clear, acid and very soft-tea colored water. Usually found along the banks of brooks and small rivulets in areas of extremely shallow water with water depth approximately between 10 and 50 cm, where they occur either in a layer of dead leaves covering the bottom of the bank side or among submerged terrestrial vegetation.
Water it lives inFreshwater, pH 4.4.
ClimateTropical climate.
Behavior to plan forBreeding: clutch tenders, biparental parental care.

What this means for care

  • Parents guard eggs or young, so expect territorial behavior when breeding.
  1. FishBase species summary: Laetacara fulvipinnis
Native climate (measured)

Native climate (measured)

Warm-season highsabout 93°F (up to 96°F in the hottest sampled areas)
Cool-season lowsabout 70°F (down to 69°F in the coldest sampled areas)
Average temperature79–82°F across sampled records
Relative humidity77–84% on average (driest month about 76%)
Rainfallabout 2742 mm a year

Measured at 30 wild occurrence records sampled against WorldClim 2.1 climate data (1970–2000 averages). Air conditions in the range are ecological context, not enclosure settings: microhabitats such as burrows, leaf litter or basking rocks can be cooler, warmer or more humid.

From the sources

From the sources

Quoted from the matching sections of reputable sources for this exact species. Specialist databases are used first; Wikipedia (community-edited, CC BY-SA 4.0) only fills gaps. Other sources are short credited quotes.

Where it livesHome ranges Population dynamics Growth parameters Max. ages / sizes Length-weight rel. Length-frequencies Mass conversion Recruitment Abundance Life cycle Reproduction Maturity Maturity/Gills rel. — FishBase
ReproductionBased on aquarium observations. — FishBase
BiologyPrefers typical blackwater habitats with clear, acid and very soft-tea colored water. Usually found along the banks of brooks and small rivulets in areas of extremely shallow water with water depth approximately between 10 and 50 cm, where they occur either in a layer of dead leaves covering the bottom of the bank side or among submerged terrestrial vegetation. — FishBase

Data and studies

The numbers

The numbers

Each bar is what one source reports. Where several sources weigh in, the dashed gold band marks their average.

Adult length

Average of sources3in
FishBase 1642.9
Seriously Fish species profiles 1673

Maximum recorded length. Measured as standard length (snout to the base of the tail, not counting the tail fin). Fish in home aquariums often stay smaller than wild records.

Water temperature

Reported68–82°F
Seriously Fish species profiles 16768–82

Range the species tolerates; aim for the middle.

pH

Reported4–7
Seriously Fish species profiles 1674–7

Water hardness

Reported1–12dGH
Seriously Fish species profiles 1671–12

Sources for this sheet

  1. FishBase (Froese & Pauly, eds.), version 24.07 Peer-reviewed researchThe global scientific database on fishes, maintained by a consortium of research institutions; every value is referenced.
  2. Seriously Fish species profiles Experienced keeper or breederLong-running aquarium reference written and peer-checked by experienced fishkeepers and ichthyologists; each profile covers habitat, tank size, water, diet, behaviour and breeding.
  3. Merck Veterinary Manual: Management of aquarium fish Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
  4. Merck Veterinary Manual: Types and features of aquatic systems Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
  5. Seriously Fish — Mikrogeophagus ramirezi Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.
  6. Seriously Fish — Mikrogeophagus altispinosus Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.