The beardfishes consist of a single extant genus, Polymixia, of deep-sea marine ray-finned fish named for their pair of long hyoid barbels. They are classified in their own order Polymixiiformes. But as Nelson says, "few groups have been shifted back and forth as frequently as this one, and they were recently added to Paracanthoptergii". For instance, they have previously been classified as belonging to the Beryciformes, and are presently considered either paracanthopterygians or the sister group to acanthopterygians. They are of little economic importance.
Gobiodon is a genus of gobies also known as coral gobies or "clown gobies". Generally, coral gobies, unlike the rest of the family Gobiidae, are not burrowers, but instead prefer to inhabit the branches of certain Acropora or similar hard corals.
Fusigobius is a genus of coral reef inhabiting gobies found throughout the Indian and western Pacific Oceans.
Paraulopus is the only genus in the family Paraulopidae, a family of grinners in the order Aulopiformes. They are commonly known as cucumberfishes, but locally some other Teleostei are also known by that name. They were considered in the Chlorophthalmidae or greeneye family until 2001.
Amblyeleotris is a genus of fish in the family Gobiidae found throughout the Indo-Pacific region. This is the largest genus of the shrimp gobies or prawn gobies, so-called because of their symbiotic relationship with certain alpheid shrimps. The shrimp excavates and maintains a burrow used by both animals while the goby, which has far superior eyesight, acts as a lookout for predators. The shrimp maintains almost constant contact with the fish with an antenna. Fossil Amblyeleotris otoliths have been found together with alpheid shrimp remnants from as early as late early Miocene (Burdigalian) suggesting a possible mutualistic association since then.
Acentrogobius is a genus of gobies native to marine, fresh and brackish waters of the coasts of the Indian Ocean and the western Pacific Ocean.
Callionymus is a genus of dragonets found mostly in the Indian and Pacific oceans with a few species occurring in the Atlantic Ocean.
Ampheristus is an extinct genus of prehistoric marine ray-finned fish. It was a basal or stem member of the family Ophidiidae, which contains modern cusk-eels. Fossils are known from worldwide from the Late Cretaceous to the late Paleogene, making it a rather successful survivor of the Cretaceous-Paleogene extinction event.
Dapalis is an extinct genus of prehistoric glassfish known from the Late Cretaceous to the Early Miocene. It is known from both freshwater and marine habitats of India, Australia, New Zealand, and much of mainland Europe.
Cirripectes is a large genus of combtooth blennies found throughout the Pacific and Indian oceans. Cirripectes biconvexus, an otolith based fossil species from the Burdigalian (Miocene) of southwestern India is probably the earliest record of this genus.
Cercamia is a genus of fishes in the family Apogonidae, the cardinalfishes. They are native to the Pacific and Indian Oceans.
Jaydia is a genus of fishes in the family Apogonidae native to the western Pacific Ocean.
Siphamia is a genus of cardinalfishes native to the Indian and Pacific Ocean. Several of these species are commensal with various species of sea urchins.
Ancistrogobius is a genus of gobies native to the western Pacific Ocean. The first fossil record of this genus is Ancistrogobius indicus from the Burdigalian of southwestern India.
Drombus is a genus of gobies native to fresh, brackish and marine waters of the Indian Ocean and the western Pacific Ocean.
The Onzole Formation is an Early Pliocene geologic formation in the Borbón Basin of northwestern Ecuador. The formation consists of a shallow marine sandstone member containing many fish fossils, among which megalodon, and a deep water member comprising tuffaceous shales and mudstones containing gastropods, bivalves and scaphopods.
This list of fossil fishes described in 2020 is a list of new taxa of jawless vertebrates, placoderms, acanthodians, fossil cartilaginous fishes, bony fishes, and other fishes of every kind that were described during the year 2020, as well as other significant discoveries and events related to paleoichthyology that occurred in 2020.
This list of fossil fish research presented in 2022 is a list of new fossil taxa of jawless vertebrates, placoderms, cartilaginous fishes, bony fishes, and other fishes that were described during the year, as well as other significant discoveries and events related to paleoichthyology that occurred in 2022.
Sunil Bajpai is the Chair Professor of Vertebrate Paleontology in the Department of Earth Sciences, Indian Institute of Technology Roorkee. He is in service as a professor at IIT Roorkee since 1st January 1996 till 30 September 2026. He also served as the director of the Birbal Sahni Institute of Palaeosciences from January 2013 to July 2018.
The Quilon limestone formation is a geologic formation existing on the west coast of India. The Quilon formation, along with Warkalli formation represent sediments laid down in the Kerala basin that existed during Mio-pliocene times. The Quilon formation of the Miocene age is made up of limestone, and the Warkalli formation is made up of alternating beds of sand and shale exposed along the Varkala cliffs.
