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Maximum size : 4 cm
Rainbow Tetra - Nematobrycon lacortei : Complete Fish Profile & Care Guide
Table of contents
Introduction
The Rainbow Tetra (Nematobrycon lacortei) is a rare and exotic addition to any aquarium. Despite their peaceful nature, Rainbow Tetras can be territorial and may bully other fish, but keeping them in a group of 8 or more can avoid this. The display of male fish is a sight to behold as they showcase their brilliant colors and extend their elegant fins while competing for female attention. To make a harmonious community aquarium, select tankmates of similar size and temperament, such as Tetras, Pencilfish, Hatchetfish, and Dwarf Cichlids like Apistogramma or Mikrogeophagus. Some of the Corydoras Catfish and smaller Plecos may also be suitable. Just make sure to avoid slow, long-finned species to prevent fin-nipping. A well-decorated tank is necessary to keep these fish happy and healthy. The tank should have plenty of plants, both rooted and floating, and spindly driftwood to provide hiding places and create a natural feel. Placing dried Indian Almond Leaves on top of the substrate will enhance the colors of the fish and gradually acidify the water. The Rainbow Tetra's club-shaped body is iridescent and displays every color of the rainbow, with a dark line extending from its eye to its caudal fin. Elongated anal fins extend from the vent to the caudal fin, and a trident-tailed caudal fin with a central spike enhances its already impressive appearance. Additionally, these fish have large, red-banded eyes, adding to their already spectacular beauty.Rainbow Tetra Photos
Sexual Dimorphism
Distinguishing between male and female Rainbow Tetras is a simple task. The males can be recognised by their longer anal, dorsal and caudal fins, along with more vibrant colours and distinct red eyes. In contrast, females have green-blue eyes and are generally more full-bodied than their male counterparts, particularly when preparing to spawn.Quick Facts
| Scientific Name | Nematobrycon lacortei |
|---|---|
| Year Described | 1971 |
| Other Names | |
| Classification | Actinopterygii |
| Order | Characiformes |
| Family | Characidae |
| Genus | Nematobrycon |
| Origins | Colombia |
| Max Size | 4 cm |
| Temperament | Peaceful |
| Aquarium Level | Middle |
| Difficulty | Beginner - Intermediate |
| Shoaling | Yes |
| Best kept as | Groups 8+ |
| Diet | Omnivore |
| Reproduction | Egg-Layer |
| Lifespan | 3 - 5 years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| PH | 5.0 - 7.0 |
| GH | 5 - 8 |
| KH | |
| TDS |
| ℉ | 72 - 80 |
|---|---|
| ℃ | 22.2 - 26.7 |
