Table 5. Intra-specific variation in meristic counts across four different species of Horaglanis. Species/LocationsDorsal-fin raysPelvic-fin raysAnal-fin raysCaudal-fin raysHoraglanis krishnaiKottayam123-24616-1722-24Kottayam223-24615-1826Ettumanoor323-1724Amayanoor2261522Kattachira (N = 2)23-24616-1730-31Kalathur2461723Thiruvanchoor2361722Pappukavala (N = 3)23-24616-1723-27Avoly2361628-30Kadayirippu2461728Horaglanis alikunhiiParappukara32461730Pudukkad42461620Kodakara42361620Kodaaly523-16-Horaglanis abdulkalamiIrinjalakuda62161528Cherpu2361622Kodaaly520-15-Thuppampadi2261628Chottanikara2661826Horaglanis populiEdanadu2361727Malapally2661729Thiruvalla2461625Chengannur (N = 3)21-24614-1723-281 Menon (1951); 2 Mercy (1981); 3 Babu and Nayar (2004); 4 Based on photographs; 5 Vincent (2012); 6 Babu (2012)

Published as part of Raghavan, Rajeev, Sundar, Remya L., Arjun, C. P., Britz, Ralf & Dahanukar, Neelesh, 2023, Evolution in the dark: Unexpected genetic diversity and morphological stasis in the blind, aquifer-dwelling catfish Horaglanis, pp. 57 in Vertebrate Zoology 73 on page 57, DOI: 10.3897/vz.73.e98367