Macrognathus
Macrognathus
The genus *Macrognathus* was first described by the French naturalist Bernard Germain de Lacépède in 1800.
The scientific name *Macrognathus* means “large jaw,” which refers to the distinctive jaw structure of these fish.
There are currently 25 valid species that belong to this genus. The largest species within this genus is Macrognathus aral, which can reach a maximum length of 63.5 cm. The smallest species is Macrognathus meklongensis, with a maximum length of 17.8 cm.
Characteristics that distinguish Macrognathus from other genera in the family Mastacembelidae include the presence of a more modified jaw structure, which can vary from slightly to significantly larger than that of the genus Mastacembelus.
Below you will find the species that belong to this genus and that have not yet been added to the database. Below that, with a photo, the species of which we already have a description.
– Macrognathus aculeatus
– Macrognathus albus
– Macrognathus aral
– Macrognathus aureus
– Macrognathus caudiocellatus
– Macrognathus circumcinctus
– Macrognathus dorsiocellatus
– Macrognathus fasciatus
– Macrognathus guentheri
– Macrognathus keithi
– Macrognathus lineatomaculatus
– Macrognathus maculatus
– Macrognathus malabaricus
– Macrognathus morehensis
– Macrognathus obscurus
– Macrognathus pancalus
– Macrognathus pavo
– Macrognathus pentophthalmos
– Macrognathus semiocellatus
– Macrognathus siamensis
– Macrognathus taeniagaster
– Macrognathus tapirus
– Macrognathus zebrinus
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