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Maximum size : 5 cm
Head and Taillight Tetra - Hemigrammus ocellifer : Complete Fish Profile & Care Guide
Table of contents
Introduction
The Head-and-tail-light Tetra (Hemigrammus ocellifer) is an excellent addition to any community aquarium. These lively and peaceful fish add a splash of colour to your tank and are adaptable to most aquarium setups. However, they do best when kept in groups of six or more individuals, as they are a shoaling species by nature. Despite their peaceful nature, it is possible for them to nip at the fins of long-finned or slow-moving fish, so it's best to keep them in a plant-filled aquarium or biotope setup. The ideal tank mates for these Tetras are Livebearers, Danios, Rasboras, and other Tetras and peaceful bottom dwellers such as Corydoras and smaller Loricariids. It's also possible to keep them with a majority of Gouramis and Dwarf Cichlids that are commonly available. However, they should not be kept with larger species, such as Angel Fish, that may see them as food. The Head-and-tail-light Tetras have two unique markings that make them stand out in your aquarium. One is near the head, right behind the eye, and the other is next to the base of the caudal fin. These markings seem to flash as they swim and turn in the aquarium, catching the light at the right angle. They also have a dark lateral line that runs across half of their body, and their reflective silver background colouration adds to their attractiveness. These Tetras are relatively hardy and adaptable, making them an ideal choice for both beginner and experienced aquarists alike.Head and Taillight Tetra Photos
Sexual Dimorphism
The Head-and-tail-light Tetra can be accurately sexed by examining their swim bladders, which are visible through their transparent skin. Male swim bladders are relatively narrow, whereas female swim bladders are rounded. As a result, adult females are slightly more extensive and heavier-bodied compared to their male counterparts, which are smaller and slimmer.Quick Facts
| Scientific Name | Hemigrammus ocellifer |
|---|---|
| Year Described | 1882 |
| Other Names | Beacon Fish, Beacon Tetra |
| Classification | Actinopterygii |
| Order | Characiformes |
| Family | Characidae |
| Genus | Hemigrammus |
| Origins | Suriname Guyana Peru Brazil |
| Max Size | 5 cm |
| Temperament | Peaceful |
| Aquarium Level | Middle - Top |
| Difficulty | Beginner |
| Shoaling | Yes |
| Best kept as | Groups 6+ |
| Diet | Omnivore |
| Reproduction | Egg-Scatterer |
| Lifespan | 3 - 5 years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| PH | 5.5 - 7.5 |
| GH | 5 - 20 |
| KH | |
| TDS |
| ℉ | 75 - 82 |
|---|---|
| ℃ | 23.9 - 27.8 |
