Bluefin Damselfish



The Bluefin Damselfish is also called the Black Damselfish, Bowtie Damselfish the Yellow-back Damsel as well as the Royal Damsel. In its juvenile stage, it's very attractive with its gray body highlighted by pink dorsal fins as well as the blue fins on its pectoral side. As the fish grows older, it will turn black. In the wild the Bluefin Damselfish is generally a solitary fish, and is frequently is associated with soft corals on which it feeds. In aquariums, the baby is typically calm, but it can become extremely aggressive once it grows. It is best to keep it together with large species that are aggressive. Only one Bluefin Damselfish should be kept in an aquarium unless it's huge. It could pose a threat to shrimp and may nip at soft corals. The Bluefin Damselfish will eat almost anything, including frozen and flake preparations. Approximate Purchase Size: 3/4" to 1-1/2"  
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General information on Bluefin Damselfish The Bluefin Damselfish as a juvenile features a gray body with a bright yellow dorsal as well as blue fins on its pectoral side. As the fish grows into adulthood, it is black uniformly. In the wild Bluefin Damselfish are typically solitary and are often closely associated with soft corals which it eats. In aquariums, the baby is typically tranquil but can be very aggressive when it grows. It is best to keep it together with large species that are aggressive. It could pose a threat to shrimp and could nibble on soft corals.  
Large, Medium, Small
6 lbs


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Is hiring a professional necessary to set up a saltwater aquarium?

As a general rule, a larger custom aquarium might require installation by a professional. However, a kit from our online fish store is relatively affordable and beginner friendly. That means you should have no problem setting it up yourself.

Which saltwater aquarium fish should you choose when starting out?

Consider a yellow tang fish. This popular saltwater aquarium fish does a great job of coexisting with other types of fish you’ll find in our online fish store.

How does a saltwater aquarium differ from a freshwater one?

Saltwater aquariums require a bit more maintenance and monitoring than freshwater tanks. Different fish require different levels of salinity, pH tolerances, and temperature requirements. They also require specialized pumps, filters, and other equipment that can handle salt. We can guide you through everything you need to know to set up a healthy, thriving reef tank.

Do fish in a saltwater aquarium swim in a school?

That depends on the species. However, if it’s a fish that swims in a school in the wild, they’ll do the same in an aquarium. Some fish that swim in schools include the green and blue chromis, cardinalfish, and dartfish, for example. When ordering from an online fish store, make sure you do your research on how specific fish species behave to ensure they’ll school (or at least coexist) with your current fish.

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Yes! Many aquarists dream of owning thriving saltwater aquariums. You have a tiny piece of the ocean in your home, featuring magical and exotic fish that can only survive in saltwater.