Colour morphs (CMs) of Trichomycterus albinotatus, with respective collecting sites (CSs) and collection catalogue numbers: CM1 (a–e); CM2 (f–g); CM3 (h); CM4 (i–j). a. CS3, UFRJ 11062, 66.8 mm SL; b. CS3, UFRJ 11062, 40.5 mm SL; c. CS3, UFRJ 11976, 44.3; d. CS5, UFRJ 12035, 44.9 mm SL; e. CS5, UFRJ 12035, 46.2 mm SL; f. CS6, UFRJ 12064, 45.2 mm SL; g. CS6, UFRJ 12064, 67.0 mm SL; h .CS11, UFRJ 12052, 49.2 mm SL; i. CS9, UFRJ 11670, 44.8 mm SL; j. CS10, UFRJ 12063, 71.5 mm SL.