Redescription of ‘Chasmocranus’ brachynema

For the discussion of catfish systematics. Post here to draw our attention to new publications or to discuss existing works.
Post Reply
User avatar
bekateen
Posts: 8976
Joined: 09 Sep 2014, 17:50
I've donated: $40.00!
My articles: 4
My images: 130
My cats species list: 142 (i:102, k:39)
My aquaria list: 36 (i:13)
My BLogs: 44 (i:149, p:2653)
My Wishlist: 35
Spotted: 177
Location 1: USA, California, Stockton
Location 2: USA, California, Stockton
Contact:

Redescription of ‘Chasmocranus’ brachynema

Post by bekateen »

Deprá, G. de C. & V. Slobodian. (2024). Redescription of ‘Chasmocranusbrachynema (Heptapteridae: Heptapterini). Neotropical Ichthyology, 22(1), e230091.
https://doi.org/10.1590/1982-0224-2023-0091
https://www.scielo.br/j/ni/a/GrBKTqTnPp ... f/?lang=en
Abstract
The endangered species ‘Chasmocranusbrachynema is redescribed and diagnosed among other Heptapterini by having the adipose fin extensively fused with the caudal fin, caudal fin shallowly bifurcate, and anal-fin insertion posterior to a vertical through the adipose-fin insertion, in addition to peculiarities of the head and mouth morphology. The species seems to be very rare, known only from five preserved specimens from the main channels of the Paraná and Mogi-Guaçu rivers, and from a tributary of the rio Ivaí, all in the Upper Paraná ecoregion.
Keywords: Endangered species; ; Rio Ivaí; Rio Mogi-Guaçu; Taxonomic review
Attachments
FIGURE 2: ‘Chasmocranus’ brachynema, NUP 22699, 93.0 mm SL, 23°40’42”S 53°15’47”W, córrego Piava, tributary to the rio das Antas, tributary to the rio Ivaí, upper rio Paraná basin at the municipality of Umuarama, State of Paraná, Brazil.
FIGURE 2: ‘Chasmocranus’ brachynema, NUP 22699, 93.0 mm SL, 23°40’42”S 53°15’47”W, córrego Piava, tributary to the rio das Antas, tributary to the rio Ivaí, upper rio Paraná basin at the municipality of Umuarama, State of Paraná, Brazil.
FIGURE 3: ‘Chasmocranus’ brachynema, EEBP 629, 74.9 mm SL, rio Mogi-Guaçu about 1 km downstream from Cachoeira de Emas. Schubart (1964) reported this specimen after the original description.
FIGURE 3: ‘Chasmocranus’ brachynema, EEBP 629, 74.9 mm SL, rio Mogi-Guaçu about 1 km downstream from Cachoeira de Emas. Schubart (1964) reported this specimen after the original description.
Image
Find me on YouTube and Facebook: http://youtube.com/user/Bekateen1; https://www.facebook.com/Bekateen
Buying caves from https://plecocaves.com? Plecocaves sponsor Bekateen's Fishroom. Use coupon code "bekateen" (no quotes) for 15% off your order.
Post Reply

Return to “Taxonomy & Science News”