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While surveying the cave, researchers said they found 11 fish with transparent fins living inside. The fish turned out to be a new species: Balitora anlongensis, or the Anlong stone loach.
These elongated, predatory fish are distinguished by their long dorsal fins, large mouths, and shiny teeth. They breathe air with gills, which allows them to migrate short distances over land. They have suprabranchial organs, which are primitive forms of labyrinth organs, that develop when they grow older. [1]
The new species doesn’t have lateral lacrimal or second preopercular spines, meaning a spine on the head and the front of the gills. The fish also has much longer lower pectoral-fin rays, the ...
Actinopterygii (/ ˌ æ k t ɪ n ɒ p t ə ˈ r ɪ dʒ i aɪ /; from Ancient Greek ἀκτίς (aktis) 'having rays' and πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish [2] that comprise over 50% of living vertebrate species. [3]
The shape, size, position and colour of the dorsal fin varies with the type of billfish, and can be a simple way to identify a billfish species. For example, the white marlin has a dorsal fin with a curved front edge and is covered with black spots. The huge dorsal fin, or sail of the sailfish is kept retracted most of the time.
The European perch (Perca fluviatilis), also known as the common perch, redfin perch, big-scaled redfin, English perch, Euro perch, Eurasian perch, Eurasian river perch, Hatch, poor man's rockfish or in Anglophone parts of Europe, simply the perch, is a predatory freshwater fish native to Europe and North Asia. It is the type species of the ...
The American pickerel (Esox americanus) is a medium-sized species of North American freshwater predatory fish belonging to the pike family. [2] The genus Esox is placed in family Esocidae in order Esociformes). Two subspecies are sometimes recognised: Redfin pickerel, sometimes called the brook pickerel, E. americanus americanus Gmelin, 1789;
Eusthenopteron (from Greek: εὖσθένος eûsthénos 'stout', and Greek: πτερόν pteron 'wing' or 'fin') [2] [1] is an extinct genus of prehistoric marine lobe-finned fish known from several species that lived during the Late Devonian period, about 385 million years ago.