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Splash Tetra / Spraying Characin
Copella arnoldi
The only fish that lays eggs OUT of water. The male splashes them every 15 minutes for days.
- Family
- Lebiasinidae
- Origin
- Sud America (Guyana, Suriname, basso Amazzonia)
- Tank use
- Used in 0 tanks
24 °C - 28 °C
6 - 7.5
Freshwater
Surface
6 cm
Description
Geographic Origin and Biotope: Native to forest streams of Guyana, Suriname, and lower Amazon. Calm waters where branches and leaves hang centimeters above the surface — natural platforms for its unique reproductive strategy.
Taxonomy and Morphology: Lebiasinidae, sleek characin (max 7-8 cm). Powerful caudal fin generating thrust for aerial leaps. Small upturned mouth for surface insect capture.
Social Behavior: The wonder: male and female leap simultaneously onto an overhanging leaf, deposit and fertilize eggs in a split second, then fall back. This synchronized jump repeats 5-10 times per spawning event.
Coloration and Sexual Dimorphism: Transparent amber-gold with a dark lateral line. Males have larger fins and slightly longer, pointed anal fin.
Care and observations
Tank Setup: 80+ liters with water level 10-15 cm below the lid to allow jumping space. Robust overhanging leaves (Pothos, emergent Anubias) positioned within jumping reach above the surface.
Feeding: Specialized surface insectivore. Accepts floating flakes, artemia nauplii, wingless Drosophila, daphnia. Small mouth.
Water Quality: Soft (GH 2-10), acidic (pH 5.5-7.0), 24-28°C. High humidity in the air space above the water is essential for egg survival.
Compatibility: Peaceful with any Amazonian community fish. Avoid aggressive surface dwellers that would disrupt breeding jumps.
Reproduction: The supreme aquarium spectacle. After synchronized leaps, eggs adhere to the emergent leaf. The male positions himself below and splashes water droplets upward with precise tail flicks every 10-20 minutes, 24/7, for 2-3 days straight, keeping eggs moist until hatching. Unique behavior in the entire animal kingdom.
Risks: Main risk is reproductive failure from improper leaf positioning. Escape risk is constant since the fish is designed to jump.
Fish profile
- Tank level
- Surface
- Adult size
- 6 cm
- GH
- 2 dGH - 10 dGH
- KH
- n/a
- TDS
- n/a
- Conductivity
- n/a
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.