Austrolebias arachan:

ZVC-P 4336 (holotype), 1, 37.8 mm SL; ZVC-P 4574, 14, 32.4-40.2 mm SL (2 C&S); ZVC-P 4314, 3, 35.4-42.0 mm SL; ZVC-P 4317, 8, 34.1-42.0 mm SL (4 C&S); ZVC-P 4332, 15, 37.1-42.2 mm SL; ZVC-P 4333, 19, 35.4-41.0 mm SL (8 C&S); ZVC-P 4329, 4, 40.0-42.2 mm SL (4 C&S); ZVC-P 4331, 21, 31.5-39.8 mm SL (3 C&S) .