Key to the species of Bollmannia
by J. Van Tassell

1a No spot present on first dorsal fin; D1 with moderately produced filaments.......2
1b A dark or diffuse spot located at the anterior or posterior margin of the first
dorsal fin;.....................................................................................................................3
2a Upper lip with a prominent dark black line; D2 - 15(14-16); D1 with
moderately produced filaments; least caudal depth greater than
eye diameter ..................................................................................................... sp nov e
2b Upper lip without a black line; D2 - 13(12-14); D1 with moderately produced
filaments; least caudal depth less than eye diameter ........................... stigmatura
3a First dorsal with a spot at the anterior edge only; no spot on caudal fin;
no black line on lip; second dorsal and anal fins both with 14(13-15)
elements ................................................................................................... marginalis
3b First dorsal with a spot at the posterior of the fin, never at the anterior edge;
upper lip with out without a dark line;....................................................................... 4
4a Upper lip with a dark line; body with faint vertical bars ......................................... 5
4b Upper lip without a dark line; caudal peduncle without a spot; at least the
lower half or all of the caudal fin dark in color ........................................................ 6
5a Spot on first dorsal present but weak; body with 3-6 faint vertical bars; spot
on caudal fin faint or absent; .................................................................macropoma
5b Spot on first dorsal present and large; body with 6-8 faint vertical bars; spot
on caudal fin faint; .........................................................................................umbrosa
6a Dark spot on first dorsal dark and surrounded by a hyaline area, forming an
ocellus, covering the membrane between spines 5-7; lower half of caudal fin
dark, upper area light ..................................................................................... ocellata
6b First dorsal with a weak spot at base covering membrane of spines 5-7;
caudal fin entirely dark; membrane uniting pelvic rays black; D2, anal,
pectorals dark in color ............................................................................... chlamydes

 

Site and photos copyright © 2000 GRIA