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Beginner's Damselfish for Marine Tank

Damselfish is a highly diverse fish family and also a hardy marine species suitable for both the reef and saltwater tank. They are considered a beginners’ fish and usually qualify as an automatic choice for startup aquariums and also for hobbyist new to the marine field. Different species of the fish comes in a variety of strong colors with the blue and green being most common but there are also the red and metallic species gaining popularity among the circle of saltwater fish keepers' community.

Newly bought young damselfish is easy to keep and acclimatize to the new tank condition. Normally their survival rate is considered the highest compared among the other different groups of domesticated marine species. The fish to certain extent and depending on the types of damselfish, some will require for them to thrive in shoals meaning that an ideal number to live together is about 5 – 6. When getting a new pet for your home aquarium, make sure that all of them come together with about roughly the same size and the minimum tank capacity to house them should be at least 80 gallons and above to prevent the fish turning aggressive against each other due to space competition.

So far, there are quite a number of popular Damselfish species with the “Blue Devil”, “Green Chromis”, “Yellow-Tailed” among the favorites. Lately I’ve also seen some new varieties with metallic coloring making its way to the pet store but however, the exact name for the species hasn’t yet been investigated and find out. Although many claim that the fish can tolerate any kind of water parameters and conditions but as a general guide it is better to keep it within a certain ideal range. You can use the references provided in a table form below so that you know where you are and what is best for your aquarium damselfish.

different damselfish speciesFrom left, Blue Devil, Green Chromis, Yellow-Tailed


Range to control

1.022 to 1.025

Depending on the species, tropical types require about 27 to 30 degree Celsius

7.7 to 8.0

Diet and Feeding
Your pet is not very particular about foods given to them. They will accept almost anything but fresh supply of natural plankton and phytoplankton that comes in liquid bottles should be provided from time to time. Apart from that if you can afford it, supplement of artemia is also encouraged.

Disease Problems
Damselfish are susceptible to various parasitic and bacterial infections caused by poor water quality in the aquarium such as high nitrite and nitrate levels. Sometimes introduction of contaminated water coming from addition of new fish could also pose a major problem. Another possibility that could lead to them becoming sick is due to infection coming from open wounds occurred during fighting and accidental injury caused by sharp edges with some aquarium decorations.

Community Behavior
Most community saltwater aquariums will have damselfish mix with either triggerfish, tang, jawfish or angelfish species. Normally your damselfish will be added first before introducing the others. Close observations and quick interventions are the keys to successful and thriving population of marine fishes. Another possible tank mate is the royal gramma.

comparison between fluval and eheimComparing Between Different Fish Filters (Advantages and Disadvantages). How about other brands like the BiOrb?

About Me

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My fascination and interest towards aquarium fish has led me to devote my time towards caring and learning about this wonderful pet.

Aquarium fish keeping is a very challenging and exciting hobby. When I first started, I never knew much or have the necessary guidance back then because none of my family members were actually a keen hobbyist. And because of that, I’ve encountered numerous failures and the worst part is having to deal with dead fish every time when you started to grow fond and getting attached to my pets. However, I persevered and took steps to find out and search for information from other hobbyist, apart from the knowledge gained and learned from my own experience and research. The blog that I’ve created here is meant to share useful information and tips about aquarium fish keeping so that new hobbyist will not make the same mistakes that I’ve made in the past."

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