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The Head and Tail Light Tetra (scientific name: Hemigrammus ocellifer) is a captivating and popular freshwater fish renowned for its distinctive markings that give it its common name. Originating from South America, particularly the Amazon basin, this species displays a translucent, silvery body adorned with two prominent, iridescent spots: one near the gill plate (the 'head light') and another at the base of the caudal fin (the 'tail light'), often rimmed with a darker pigment. These spots glimmer under proper lighting, creating a mesmerizing effect in the aquarium. Growing to an average size of 1.5 to 2 inches (3.8-5 cm), they are a relatively small and peaceful addition to community tanks, typically living for 3-5 years with good care. As a schooling fish, Head and Tail Light Tetras thrive in groups of six or more, exhibiting their natural behaviors and vibrant colors more fully when kept in adequate numbers. Their active yet non-aggressive nature makes them excellent tank mates for other small, peaceful species like other tetras, rasboras, dwarf cichlids, corydoras, and small gouramis. For optimal health and coloration, a well-planted aquarium of at least 10-20 gallons is recommended for a small school. They appreciate a densely planted tank with areas of open swimming space, along with driftwood or caves that provide hiding spots and diffuse lighting. Preferred water parameters include a temperature range of 72-79°F (22-26°C), a pH of 6.0-7.5, and soft to moderately hard water (dH 5-15). A good filtration system and regular water changes are crucial to maintain pristine water quality. Their diet is unfussy; they are omnivores and readily accept high-quality flake foods, micro-pellets, and a variety of live or frozen foods such as brine shrimp, daphnia, and bloodworms. Regular feeding with a varied diet will ensure their health and enhance their vibrant colors. Breeding them in a home aquarium can be achieved, typically requiring soft, acidic water and a separate breeding tank with fine-leaved plants or a spawning mop.

A very hardy and popular beginner tetra with iridescent spots.