The Longfin Clownfish B27 is a captive-bred designer variant of Amphiprion ocellaris, set apart by dramatically elongated, flowing fins that are frequently edged in black. The underlying species carries the familiar orange body marked with three white bands and a rounded tail, and wild populations occur across the Indo-West Pacific on coral reefs and in shallow, calm lagoons, typically living in association with large sea anemones. Adults of this variety reach roughly 3 inches, so the visual impact comes from finnage rather than bulk.

Plan on a 30-gallon aquarium or larger for an adult pair, with additional volume welcome when other tankmates share the system. Aquascape with live rock formations that provide shelter and establish clear territorial boundaries, and keep water movement in the low-to-moderate range, since the trailing fins of longfin varieties are poorly suited to strong current. Sand, crushed coral, or a bare bottom all work as substrate choices. A host anemone is optional; captive-bred longfins settle in readily without one and will often claim a section of rockwork or a coral instead.

In the wild, Amphiprion ocellaris feeds as an omnivore, taking algae along with copepods, amphipods, other small crustaceans, polychaete worms, and zooplankton, and supplementing that with food scraps left behind by its host anemone. That mixed intake of animal and plant matter is the target to reproduce in the aquarium.

Captive-bred specimens arrive already conditioned to prepared foods and readily accept marine pellets, flakes, frozen mysis shrimp, and frozen brine shrimp. Feed at least once daily, though two or three smaller meals spread through the day are preferable when a schedule allows. These clownfish are rarely picky eaters, so keep portions sized to be consumed within a few minutes to avoid overfeeding and the water-quality problems that follow.

Marine Pellets Marine Flakes Frozen Mysis Shrimp Frozen Brine Shrimp Marine Algae
This is an active, personable fish that stakes out a defined area of the aquarium and defends it. Territorial displays become more pronounced around a chosen host, a mate, or a clutch of eggs, and the behavior is more noticeable in smaller aquariums where escape routes are limited. Kept as a pair, the fish form a size-based hierarchy in which the larger individual becomes the dominant female and the smaller remains male. Different clownfish species should not be mixed in a confined aquarium.

Suitable companions include gobies, blennies, cardinalfish, firefish, many wrasses, tangs, dwarf angelfish, and other calm community species. Avoid rambunctious or fin-nipping fishes, as the long, conspicuous fins are an obvious target. The Longfin Clownfish is reef safe with soft corals, LPS, and SPS, and coexists well with cleaner shrimp, hermit crabs, snails, and urchins. Without an anemone present, it may adopt a coral as a substitute host, and the repeated contact can cause mild irritation to that colony.

FAQ

Frequently Asked Questions

About the Longfin Clownfish B27

  • Does a Longfin Clownfish require an anemone?
    No. Captive-bred Longfin Ocellaris Clownfish thrive with or without an anemone, and when none is present they often adopt a coral or another aquarium feature as a substitute host.
  • What aquarium size and water movement suit this fish?
    Provide at least a 30-gallon aquarium for adults, with more space beneficial when tankmates are added. Keep flow low to moderate so the elongated fins are not constantly pressed against strong current.
  • Which tankmates should be avoided?
    Do not mix different clownfish species in a confined aquarium, and skip rambunctious or fin-nipping fishes that would target the long fins. Peaceful community fishes and common reef invertebrates are generally safe.