Red Laser Tetra Care Guide
Hemigrammus coeruleus · Freshwater Fish
What Red Laser Tetra look like
The Red Laser Tetra, scientifically known as Hemigrammus coeruleus, exhibits a laterally compressed and fusiform body shape, reaching a maximum adult size of approximately 2 inches (5 cm). The species is characterized by a striking silvery body adorned with a vivid red horizontal stripe that runs along the midline, resembling a laser beam, which serves as a key identification feature. Sexual dimorphism is subtle; males tend to display slightly more vibrant coloration and a more pronounced red line compared to females. The species possesses a small, forked caudal fin and an adipose fin, contributing to its streamlined appearance. The dentition is small and suited for an omnivorous diet, while the presence of a lateral line system aids in detecting vibrations in the water, enhancing its ability to navigate its environment and avoid predators.
Behavior & temperament
Red Laser Tetras are typically found in small to medium-sized schools, exhibiting a social hierarchy where individuals establish dominance through subtle displays of color and body posture. They predominantly inhabit the mid to upper water column in their natural habitat, often dwelling in densely vegetated areas of slow-moving streams and rivers. During breeding, they exhibit egg-scattering behavior, where females release eggs among aquatic plants, allowing for a degree of parental care through the protection of the spawning site. Their temperament is generally peaceful, making them suitable for community tanks, although they may exhibit slight territoriality during breeding periods.
Diet & feeding
In the wild, Red Laser Tetras are omnivorous, feeding on small invertebrates, plant matter, and detritus. In captivity, they thrive on a varied diet that includes high-quality flake food, micro-pellets, and occasional live or frozen foods such as brine shrimp and daphnia to ensure optimal health and coloration.
Behind the name
Hemigrammus (half line); coeruleus (blue), although the species is more noted for its striking red line than its blue hue.
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Red Laser Tetra?
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