The Pinnatus Batfish, *Platax pinnatus*, is a truly stunning and unique addition to the large marine aquarium. In its juvenile stage, it is characterized by its dramatic, elongated dorsal and anal fins, which are edged in a vibrant orange or yellow, contrasting sharply with its deep black body. As it matures, the body becomes more silvery-grey, and the fins become less elongated, taking on a more rounded shape.
A minimum tank size of 250 gallons is recommended for a single adult Pinnatus Batfish due to its potential size and active swimming habits. A larger tank is necessary to accommodate its growth and provide ample swimming space. Provide plenty of open swimming areas, along with some rockwork for occasional shelter. While juveniles may appreciate some hiding spots, adults are generally more open water swimmers.
The Pinnatus Batfish is an omnivore with a varied diet. In the aquarium, it should be offered a mix of high-quality marine flake and pellet foods, frozen foods such as mysis shrimp, brine shrimp, and chopped seafood, as well as vegetable matter like marine algae and spirulina. Offering a diverse diet is crucial for their long-term health and vibrant coloration.
This species is generally peaceful towards other fish, but its large size can be intimidating to smaller, more timid tankmates. It is not considered reef-safe as it may nip at corals and other sessile invertebrates. It is best kept in a fish-only or FOWLR (Fish Only With Live Rock) aquarium.
The Pinnatus Batfish can grow quite large in the aquarium, potentially reaching sizes of 12 inches or more. It is a long-lived species and can be a rewarding pet for the dedicated aquarist who can provide the necessary space and care. There are no readily apparent visual differences between males and females. Breeding in captivity is not common.