Rainbow Thread Fin | Planted Tank Fish | Pair

Introduction

The Rainbow Thread Fin, also known as Iriatherina werneri, is a delicate and visually stunning freshwater fish that adds grace to any planted tank. This species is admired for its elongated, flowing fins that resemble delicate threads, and its body shimmers with a spectrum of colors ranging from soft gold to iridescent blues and greens.

As a small fish, the Rainbow Thread Fin typically grows to about 4-5 cm in length. It is a peaceful species, making it an excellent choice for a community tank with other gentle fish. In a pair, these fish often display beautiful courtship behaviors, with the male showcasing his impressive fins to attract the female.

The Rainbow Thread Fin thrives in a well-planted aquarium, where the lush greenery not only enhances its colors but also provides a sense of security and places to explore. It prefers slightly acidic to neutral water, with a pH range of 6.0-7.5, and a temperature between 24-28C.

This species is best kept in groups, but a pair can still thrive in a well-maintained tank. They are sensitive to water quality, so regular water changes and good filtration are essential. Their diet should consist of high-quality micro-pellets, flakes, and small live or frozen foods like daphnia or brine shrimp.