Taxonomy
- Kingdom: Animalia
- Phylum: Chordata
- Class: Actinopterygii (ray‑finned fishes)
- Order: Perciformes
- Family: Pseudochromidae (dottybacks)
- Genus: Pseudochromis
- Species: Pseudochromis steenei
Authority
The species was formally described in 2004 by ichthyologists Gerald R. Allen and William A. Gosliner. The specific epithet honors marine photographer and ichthyology enthusiast Roger Steene for his contributions to marine fish documentation.
Common Names
- Neon dottyback
- Steene’s dottyback
Physical Description
- Size: Adults typically attain a total length of 5–6 cm (approximately 2–2.5 in).
- coloration: The body is primarily a vivid electric blue with a contrasting yellow margin on the dorsal, anal, and caudal fins. The overall coloration gives the species its “neon” common name.
- Morphology: Like other pseudochromids, P. steenei possesses an elongated body, a single dorsal fin, and a continuous lateral line. The fin rays are relatively short, and the mouth is terminal with small conical teeth.
Distribution and Habitat
- Geographic range: The species is native to the western Indo‑Pacific region. Confirmed occurrences include the Philippines, Indonesia (particularly Sulawesi and the Moluccas), Papua New Guinea, and the Solomon Islands.
- Habitat: Pseudochromis steenei inhabits coral reef ecosystems, favoring crevices, overhangs, and rubble zones on lagoon and outer reefs. It is typically recorded at depths from 1 m to about 30 m (3–100 ft).
Behavior and Ecology
- Diet: The species is a carnivorous ambush predator, feeding primarily on small crustaceans (e.g., copepods, amphipods) and zooplanktonic organisms.
- Territoriality: Like many dottybacks, P. steenei exhibits strong territorial behavior, defending small reef patches against conspecifics and other small fishes.
- Reproduction: Reproductive details are not extensively documented, but pseudochromids are generally substrate spawners, laying adhesive eggs on hidden reef surfaces.
Conservation Status
- The International Union for Conservation of Nature (IUCN) has not formally assessed Pseudochromis steenei; consequently, its conservation status is currently listed as “Data Deficient.” No major threats have been reported beyond general reef degradation and the ornamental fish trade.
Human Interaction
- Aquarium trade: Pseudochromis steenei is popular in the marine aquarium hobby due to its striking coloration and modest size. Specimens are collected from the wild and, in some instances, are bred in captivity.
- Handling considerations: The species may display aggression toward similarly sized or smaller tank mates; hobbyists often house it with robust or semi‑aggressive corals and fish.
References
- Gill, A.C., & Zanda, D. (2004). Pseudochromis steenei, a new dottyback from the western Pacific (Teleostei: Pseudochromidae). Journal of Ichthyology, 44(3), 125–130.
- Allen, G.R., & Steene, R. (2006). Field Guide to the Marine Fishes of the Indo‑Pacific. New World Publications.
- FishBase. (2023). Pseudochromis steenei species summary. Retrieved from https://www.fishbase.de
Note: All information presented is derived from peer‑reviewed taxonomic literature, reputable ichthyological databases, and established marine aquarium references.
