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Apollo sharkminnow

Luciosoma spilopleura

Fishes › Carp, barbs, minnows, loaches (Cypriniformes) › Danionidae (Danios and rasboras)

The Apollo sharkminnow (Luciosoma spilopleura) species of freshwater ray-finned fish belonging to the family Danionidae, the danios or danionins.

Aquarium hobby
Experience: Easy
FamilyDanios and rasboras
Adult lengthup to 9.8 in
WaterFreshwater

Care at a glance

Species-specific aquarium care

  • Tank: At least 48 in long and 21 in front to back for one adult (adults commonly reach about 9.8 in / 25 cm).
  • Water: Freshwater.
  • Temperature: 75–81°F (range recorded for this species).
  • Hardness: 5–8 dGH.
  • Layout: Uses both the bottom and open water: give open swimming space plus cover near the substrate.

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

  • Behaviour: a shoaling fish best kept in a group of six or more; suited to a community tank.
  • Difficulty: Moderate (Seriously Fish rating).

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

Group care guide

Danios and rasboras

Applies to most species in this group. Habitat: These Asian fishes occupy habitats ranging from zebra-danio pools and rice paddies to shaded harlequin streams, rocky Devario streams and planted galaxy-rasbora wetlands. [fg159-zebra, fg159-harlequin, fg159-giant, fg159-galaxy]. Individual species can differ, so compare with the species numbers above and the linked sources.

Level 2 reflects common aquarium species. Water range is ONLY for zebra danios; harlequins use 69.8–82.4°F, galaxy rasboras 68–78.8°F and D. aequipinnatus 60.8–78.8°F. [fg159-zebra, fg159-harlequin, fg159-galaxy, fg159-giant] Avoid routine tannin-rich wood/leaf additions for galaxy rasboras. [fg159-galaxy] Giant danios are often misidentified as D. aequipinnatus. [fg159-giant] Obtain separate profiles for the listed Rasbora and T. espei before using these examples as a stocking prescription.

Housing & setup

  • Use at least 90 × 30 cm (36 × 12 in) for zebra danios.
  • Harlequins require at least 60 × 30 cm (24 × 12 in), shaded planted cover and subdued light.
  • Devario aequipinnatus needs at least 120 × 45 cm (48 × 18 in), oxygenated water, moderate flow and a tight lid.
  • Galaxy rasboras need dense planting and broken sight lines in at least 45 × 30 cm (18 × 12 in), with gentle sponge filtration.
  • Match chemistry: harlequins pH 5.0–7.5, 1–12 dGH; galaxy rasboras pH 6.5–7.5, 5–15 dGH.

Sources 877878879880

Climate & lighting

Water64.4–77°F

Sources 877878879880

Diet

  • Quality flakes or granules sized to the fish.
  • Live or frozen Daphnia and Artemia.
  • Bloodworms for zebra danios, harlequins and Devario.
  • Small sinking foods for galaxy rasboras, which rarely feed at the surface.

Sources 877878879880

Social life

  • Keep zebra danios and harlequins in groups of at least 8–10. Galaxy males spar: dense cover and larger groups distribute aggression. Active Devario can overwhelm timid feeders.

Sources 877878879880

Health watch

  • Pseudoloma microsporidiosis in zebra danios.
  • Pleistophora infection and columnaris can produce similar white lesions in zebra danios.
  • Nipped fins among rival galaxy males.

Sources 877878879880

Understanding the animal

About this animal

About this animal

This fish is found in Thailand, Sumatra and Borneo.

Quoted from the Wikipedia article “Apollo sharkminnow” (CC BY-SA 4.0) 174

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. Uses both the bottom and open water. Known from high gradient rivers with rocky, stony or gravel bottoms.
Water it lives inFreshwater, 75–81 °F (24–27 °C), pH 6.5, hardness 5–8 dH.
ClimateTropical climate.

What this means for care

  • Keep water within its wild range, 75–81 °F.
  1. FishBase species summary: Luciosoma spilopleura
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
BiologyKnown from high gradient rivers with rocky, stony or gravel bottoms. — 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 sources6.5in
FishBase 1649.8
Seriously Fish species profiles 1673.2

Maximum recorded length. Measured as total length. Fish in home aquariums often stay smaller than wild records.

Water temperature

Reported75–81°F
FishBase 16475–81

Range the species tolerates in nature; aim for the middle.

Water hardness

Reported5–8dGH
FishBase 1645–8

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. Seriously Fish: Zebra danio (Danio / Brachydanio rerio) Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  4. Seriously Fish: Trigonostigma heteromorpha Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  5. Seriously Fish: Devario aequipinnatus Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  6. Seriously Fish: Danio / Celestichthys margaritatus Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  7. Wikipedia (species article) Community referenceFree encyclopedia; useful overviews with their own citations. Intro text is quoted under CC BY-SA 4.0.