Midget Chromis
Chromis acares
A tiny schooling damsel that brings reef-like energy to modest-sized tanks.

About
The Midget Chromis (Chromis acares) earns its name honestly, topping out at just a couple of inches even as a fully grown adult. In the wild, this small damselfish ranges widely across the central and south Pacific, from the Mariana Islands out to Hawaii and the Society Islands, with possible appearances as far west as the eastern Indian Ocean. Out on the reef, groups of them hover in aggregations along the upper edges of seaward slopes, picking planktonic food from the water column above live coral and rubble. They're an open-water feeder by nature, so expect them to spend most of their time in the mid to upper levels of the aquarium rather than hiding near the bottom. Like other members of the genus, males take an active role in reproduction, guarding and fanning the adhesive eggs after spawning. In a home aquarium, the Midget Chromis is a reasonable choice for someone still building experience with saltwater fish. Its small footprint means it doesn't need a sprawling tank, and its omnivorous appetite makes feeding straightforward. Keeping a small group rather than a lone individual tends to bring out the most natural behavior and gives the tank a livelier feel.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Midget Chromis
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Midget Chromis get?
- The Midget Chromis reaches about 1β2" as an adult.
- What size tank does the Midget Chromis need?
- A minimum of 30 gallons is recommended for the Midget Chromis, with more room needed for a proper group.
- What water parameters does the Midget Chromis need?
- The Midget Chromis does best with a temperature of 72β78Β°F, a pH of 8.2β8.4, hardness around 5β12 dGH.
- Is the Midget Chromis aggressive?
- The Midget Chromis is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Midget Chromis eat?
- The Midget Chromis is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Midget Chromis live?
- With good care, the Midget Chromis typically lives 3-5 years.
- Is the Midget Chromis reef safe?
- The Midget Chromis is generally considered reef safe.