Common name: bank butterflyfish

Scientific name: Prognathodes aya (Jordan, 1886)
Four eye butterflyfish in Flower Garden Banks National Marine Sanctuary, East Bank 2023

General information

The Bank Butterflyfish, scientifically known as Prognathodes aya, is a lesser-known species in the aquarium trade, primarily due to its deep-water habitat and relative rarity. This species is characterized by its deep-bodied form, striking coloration of yellow, black, and white, and its elongated snout which is useful for picking food out of crevices.

Details

Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
22 to 27 °C (72 to 81 °F)
Acidity
pH 7.8 to 8.4
Average size
15 cm (6″)
Care level
Moderate to easy Prefers strong water flow
Diet
Carnivore Enjoys mysis and brine shrimp
Social
Pair Can be kept in pairs
Reefsafe
Yes
Aggression
Semi aggresive May be territorial
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Butterflyfish
    Chaetodontidae
  6. Genus
    Longnose Butterflyfish
    Prognathodes
  7. Species
    bank butterflyfish
    Prognathodes aya (Jordan, 1886)
  8. Synonyms
    Chaetodon aya Jordan, 1886
    Chaetodon eques Steindachner, 1903

Care

Bank Butterflyfish are considered to be moderately difficult to care for, mainly because they require a well-established aquarium with stable water conditions. They are best suited for larger tanks that can provide ample swimming space and rockwork for hiding. Their diet should include a variety of meaty foods, such as mysis shrimp and finely chopped seafood, as well as some vegetable matter.

Reproduction

Little is known about the reproductive habits of Prognathodes aya in the wild or in captivity. Like many butterflyfish, they are likely to form monogamous pairs and engage in elaborate courtship displays.

Habitat

Prognathodes aya is typically found in deeper waters of the Western Atlantic, ranging from North Carolina to the Gulf of Mexico and down to the northern coast of South America. They are often associated with steep reef walls and drop-offs.