Anatolichthys villwocki

Common name. Sakarya killifish.

Diagnosis. Distinguished from other species of Anatolichthys by: ● male with 4–14 vertical rows of small black or brown spots on caudal / ● male with 13–25 narrow brown bars on body / ● female larger than 40 mm SL usually without back spots or blotches on flank except one bold black blotch at middle posterior most caudal peduncle / ○ male with regularly set and shaped dark-brown or black bars, without white spots in bars / ○ male with bright yellow anal with narrow black margin / ○ male with flank bars behind dorsal origin wider than interspaces / ○ body completely covered with overlapping scales. Size up to 60 mm SL.

Distribution. Türkiye: Lake Ilgın and upper Sakarya drainage downstream to about confluent of Sakarya and Porsuk.

Habitat. Lakes, springs, and slow-flowing streams with dense vegetation.

Biology. Male live up to 4 years, females up to 5 years; batch spawning from late of March to July.

Conservation status. LC.

Further reading. Hrbek & Wildekamp 2003 (description).