,a- 



''-}■>'. 



Fig. 23. - Dimorphic dorsal-fin spine of nuptial male Ageneiosus. Left lateral 

 view: (A)^. brevifilis (MG 27298); (B)A. atronasus (FMNH 93488). 

 Dorsal view: (C)^. ucayalensis (MHNG 2394.36); (D)^. vittatus 

 (MCNG5862). Scale: A-C = 10mm;D = 5 mm. .^^ 









•J** 



- -^^'^i v.-> 



