Jordaniidae
Jordaniidae is a family of marine fish in the order Perciformes. It is comprised of two genera, Jordanidia and Microichthys, with 12 recognized species. While not well-known to the general public, these fish play a vital role in marine ecosystems, serving as prey for larger fish and contributing to the food chain.
Common Names
Members of the Jordaniidae family are commonly referred to as Jordan's basslets, a name reflecting their resemblance to the bass family (Moronidae). However, this family name is not widely used, and some species have their own unique common names.
Characteristics
Jordaniidae fish are distinguished by several key features:
- Slender, elongated bodies with a compressed profile
- Large eyes, often protruding from the head
- Small mouths with a slightly protrusible upper jaw
- A single dorsal fin with a distinct anterior spine followed by soft rays
- Anal fin with a single spine followed by soft rays
- Pelvic fins are located in a thoracic position (below the pectoral fins)
- Scales are generally small and ctenoid (rough)
- Coloration varies depending on species, but often includes a combination of browns, yellows, and oranges.
Environment
Jordaniidae fish are primarily found in tropical and subtropical waters of the Indo-Pacific region. They inhabit coral reefs, rocky shores, and seagrass meadows, typically at depths ranging from a few meters to over 100 meters. Some species may be found in deeper waters, with Microichthys often inhabiting areas beyond the continental shelf.
References
For further information on Jordaniidae, you can consult the following reliable resources: