Laias

Laias is a genus of small, freshwater fish native to Southeast Asia. It is a popular choice among aquarists due to its peaceful nature and vibrant colors. There are currently 12 recognized species in the genus Laias, with the most well-known being Laias apogon, commonly known as the neon tetra.

Laias fish are typically small, growing to about 1.5 to 2.5 inches (3.8 to 6.4 cm) in length. They are known for their bioluminescent properties, with some species exhibiting a glowing effect under certain lighting conditions. This trait is particularly noticeable in Laias apogon, where the fish's belly and fins glow blue under dark conditions.

Laias fish are omnivorous, feeding on a variety of foods including small insects, worms, and plant matter. In the wild, they inhabit slow-moving or still waters with dense vegetation, where they use their bioluminescent abilities to attract prey or communicate with other fish.

In aquarium settings, Laias fish are generally peaceful and can be kept in groups. They are sensitive to water quality and require well-filtered water with a neutral to slightly acidic pH. They are also known to be jumpers, so a well-fitted lid on the aquarium is recommended.

Laias fish are not typically recommended for beginners due to their specific care requirements and sensitivity to water parameters. However, with proper care, they can make a striking addition to a well-established aquarium.