Ref:
Armbruster, J.W., N.K. Lujan, & D.D. Bloom. 2021. Redescription of the Guiana Shield darter species Characidium crandellii and C. declivirostre (Crenuchidae) with descriptions of two new species. Ichthyology & Herpetology 109:102-122.
https://bioone.org/journals/ichthyology-and-herpetology/volume-109/issue-1/i2019299/Redescription-of-the-Guiana-Shield-Darter-Species-Characidium-crandellii-and/10.1643/i2019299.full
