The Longfin Clownfish A13 is a designer, captive-bred expression of Amphiprion ocellaris, set apart by elongated, trailing fins that give the fish a slow, drifting presence in the water column. Several color forms exist within the longfin lineage, including the familiar orange-and-white Longfin Ocellaris, the mottled Fancy Longfin, and the dark Longfin Phantom. The parent species ranges across Indo-Pacific reefs, where wild populations vary from brilliant orange to nearly black-and-white depending on locality. Adults reach roughly 3 inches, with females growing larger than males.

Plan on a 30-gallon aquarium or larger for a pair, which provides the water volume needed for steady conditions. Aquascaping should supply caves, coral heads, or rockwork that the fish can adopt as a home site, but avoid sharp rock and hard-edged decor, since the extended fins tear easily. Keep flow moderate to low; the additional fin length makes these fish weaker swimmers than standard clownfish, and turbulent water leaves them stressed. Fine sand or a mixed marine substrate suits them well, paired with standard marine filtration and partial water changes of roughly 10 to 25 percent every two to four weeks.

An anemone is not necessary. Longfin Clownfish frequently host in rockwork, in euphyllia such as torch, hammer, or frogspawn, or simply in a self-selected corner of the aquarium that they occupy day after day.

These clownfish are omnivores, and captive-bred, quarantine-conditioned specimens take prepared foods without hesitation. Marine pellets and flakes form a reliable staple, supplemented with frozen mysis shrimp, frozen brine shrimp, and varied frozen marine blends. Rotating between food types supports color and immune health, and a vitamin supplement mixed into frozen portions is a useful addition.

Feed two to three times daily, offering only what the fish can consume within two to three minutes so that uneaten food does not decay and drive ammonia upward. Because these fish arrive already trained onto prepared diets, the feeding difficulties sometimes seen with wild-caught clownfish are largely absent, and most specimens begin eating promptly after acclimation.

Marine Pellets Marine Flakes Frozen Mysis Shrimp Frozen Brine Shrimp Varied Frozen Marine Blends
Longfin Clownfish claim and defend a specific rock, coral, or section of the tank, and they spend the majority of their time within that small territory. They share the social structure of other ocellaris and percula-type clowns, functioning as protandrous hermaphrodites in which the dominant, larger individual develops into the female. For that reason, introducing two similarly sized mature fish often produces fighting instead of a settled pair; a clear size difference gives the hierarchy somewhere to go.

Toward other species they are peaceful and mix well with gobies, blennies, cardinalfish, most wrasses, tangs, and dwarf angelfish. Choose tankmates carefully, since boisterous or nippy fish can shred the long fins. They are reef safe and can be housed with soft corals, LPS, and SPS, as coral tissue is not part of their diet, and they leave cleaner shrimp, hermit crabs, snails, and urchins alone. The one caveat is hosting behavior: a pair that settles into a torch, hammer, or frogspawn may irritate that particular coral through constant contact, even though the fish poses no threat to the reef as a whole.

FAQ

Frequently Asked Questions

About the Longfin Clownfish A13

  • Do Longfin Clownfish need an anemone to thrive?
    No. Captive-bred Longfin Clownfish commonly skip anemones altogether and will host in torch, hammer, or frogspawn corals, or simply claim a section of the tank.
  • What tank size is recommended for a pair of Longfin Clownfish?
    A 30-gallon aquarium is the recommended minimum for an adult pair, and larger volumes provide even more stable water conditions.
  • Are Longfin Clownfish more delicate than standard clownfish?
    Their long, flowing fins tear more easily on sharp rock or from aggressive tankmates, and the extra fin length makes them weaker swimmers, so flow should stay moderate to low.