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Mark Henry Sabaj (3)

The genus and its type species, Rhicron rhicron, were officially designated by ichthyologist Peter Endruweit in 2025. These fish are native to the Irrawaddy River system and have specific features, like a large fleshy adipose fin and a forked caudal fin. The designation by original description indicates that Rhicron is a monotypic genus, meaning it currently contains only one recognised species, R. rhicron. This new genera and species is small being 29.8 mm from snout to base of caudal fin (Sabaj, Mark 2025). Aquarium Care: Not a lot is known of this new species but probably a fine sandy substrate would be preferred, since these fish will spend a considerable amount of time burrowing into the substrate. Etymology: The genus name Rhicron: rhís, nose; cron, Latinised from krótos, a loud noise or clap, i.e., a clapping nose, referring to “peculiar and distinctive” morphology of the posterior extensions of the nasal barbel, which form two roundish parallel flaps resembling clapping hands. The specific name rhicron: As for genus.

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Sisoridae

Asia: Mengnaihe River, Jieyanghe River basin, Irrawaddy River system, ca. 24°45'N 97°42'E, at Xima Town, Yingjiang County, Dehong Prefecture (China).

3.0cm. (1¼ins)

18-25°c (64-77°f.)

6.5-7.0.

Endruweit, M. 2025 (20 Sept.) Fishes of the Red River -- Cypriniformes, Siluriformes. Isernhagen, Germany: 1-295. [Publication date erroneously given as 21 Aug. 2024.]
Sabaj, Mark. pers comm 2025.
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.