Splashing Tetra Care Guide
Copella arnoldi · Freshwater Fish

What Splashing Tetra look like
The Splashing Tetra, scientifically known as Copella arnoldi, exhibits a small, elongated body that typically reaches a maximum adult size of 2-3 inches (5-7.5 cm). Its morphology is characterized by a pale pinkish-brown coloration adorned with distinct small red spots scattered across the scales, providing a cryptic appearance among aquatic vegetation. Sexual dimorphism is evident, with males displaying an enlarged upper lobe of the caudal fin, which is more pronounced compared to the females. The species possesses a laterally compressed body, facilitating agile movements in its natural habitat. Notably, the Splashing Tetra exhibits unique adaptations for its reproductive behavior, including the ability to leap out of the water to deposit eggs on overhanging leaves, a behavior that is complemented by its streamlined body shape and powerful caudal fin, which aids in rapid ascents and descents in the water column.
Behavior & temperament
Copella arnoldi is primarily a social fish, often found in small groups within its natural habitat, which promotes a hierarchical structure among individuals. This species typically occupies the upper to mid-water column, exhibiting pelagic tendencies as it forages and interacts with its environment. The Splashing Tetra is known for its unique breeding behavior, where pairs engage in a spectacular display of leaping out of the water to lay eggs on overhanging foliage, making them obligate surface spawners. In terms of temperament, they are generally peaceful but can exhibit mild territoriality during breeding periods, particularly among males vying for prime spawning sites.
Diet & feeding
In the wild, the Splashing Tetra is an omnivore, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, it thrives on a balanced diet of high-quality flake food, supplemented with live or frozen foods such as brine shrimp and daphnia to ensure optimal health and coloration.
Behind the name
The genus name 'Copella' is derived from the Latin word 'copa,' meaning 'cup,' likely referring to the shape of the fish, while 'arnoldi' honors the naturalist and explorer who contributed to the study of this species.
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Splashing Tetra?
AquaLens identifies your fish and plants from a photo, tracks water chemistry, and flags health issues early — free on iOS and Android.



