Splash Tetra Identification Guide
Recognize this slender surface-jumping characin by its upturned mouth and the male's elongated fin rays.
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Key identification features
- Slender, elongated body around 6-8 cm, flattened along the top to help it leap from the water
- Strongly upturned mouth adapted for snapping prey and jumping to lay eggs above the waterline
- Translucent olive to golden body with iridescent blue-green sheen along the upper flanks
- Males show extended, flowing dorsal and anal fin rays with red-orange highlights, more pronounced than in females
- Rounded tail fin rather than the deeply forked shape seen in many other tetras
Common look-alikes
- Pencilfish: similarly slender-bodied, but pencilfish have a straight horizontal dark stripe along the body and a smaller, non-upturned mouth
- Other Copella species: very similar in shape, best separated by subtle differences in fin coloration and the extent of red-orange in the male's fins
- Marbled hatchetfish: shares a surface-oriented lifestyle, but has a deep, keel-shaped belly totally unlike the splash tetra's slender profile
Where you'll see one
Native to slow-moving, densely vegetated streams and blackwater creeks in the Amazon and Guyana regions of South America, this species stays near the surface where overhanging leaves provide sites for its unusual out-of-water egg-laying behavior.
Frequently asked questions
How do I distinguish a splash tetra from a pencilfish?
Check for a horizontal dark stripe: pencilfish have one running the length of the body, while splash tetras lack this stripe and instead show an upturned mouth and flowing fin extensions in males.
What tells male and female splash tetras apart?
Males have noticeably longer, more colorful dorsal and anal fin rays with red-orange tints, while females have shorter, plainer fins and a slightly deeper body.