. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Paracheirodon Relationships • Weitzman and Fink 369. Figure 26. Paracheirodon axelrodi, Brazil, Amazonas, Rio Negro at Sao Joao near Tapurucuara, USNM 216905, female above, SL 24,6 mm, male below, SL mm. Paracheirodon axelrodi occurs in the upper Rio Negro region from the region of Tapurucuara west to at least the lower regions of the Rio Vaupes in Colombia (=Rio Uaupes in Brazil), the Rio I^ana, the Rio Guainia northward up the Rio Casiquiare in Venezuela and the headwater area of the Rio Ori- noco. It very prob
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Paracheirodon Relationships • Weitzman and Fink 369. Figure 26. Paracheirodon axelrodi, Brazil, Amazonas, Rio Negro at Sao Joao near Tapurucuara, USNM 216905, female above, SL 24,6 mm, male below, SL mm. Paracheirodon axelrodi occurs in the upper Rio Negro region from the region of Tapurucuara west to at least the lower regions of the Rio Vaupes in Colombia (=Rio Uaupes in Brazil), the Rio I^ana, the Rio Guainia northward up the Rio Casiquiare in Venezuela and the headwater area of the Rio Ori- noco. It very probably occurs in the adjacent regions of the Rio Sipapo and the Rio Atabapo of Venezuela, and the Rio Inirida, Rio Guaviare, Rio Vichada, and Rio Meta of Colombia. This species has escaped and is reproducing in at least one stream, a tributary of the Igarape Taruma A^u, about 20 km north of Ma- naus. See 2 for discussion of the type lo- cality. Description. See Table 2 for morpho- metries and meristics of individual popu- lation samples. Morphometries given be- low are total ranges for all samples including some not in Table 2. Aquarium specimens are excluded. Body moderately elongate, not com- pressed. Greatest body depth at or slightly anterior to dorsal-fin origin. Predorsal body profile moderately convex to area dorsal to eye. Body profile concave at nape. Body profile somewhat elevated at dorsal-fin origin; slightly convex or nearly straight along dorsal-fin base; slighdy con- vex between dorsal-fin base and adipose- fin origin. Caudal peduncle concave in both dorsal and ventral profiles. Dorsal fin midway between caudal-fin base and snout tip or slightly nearer snout tip. Ventral body profile slightly convex from anterior tip of lower jaw to posterior anal-fin ter- mination. In specimens which appear starved, Figure 29, belly profile may be nearly straight. Head and snout relatively short, snout blunt. Mouth nearly terminal with lower jaw slightly included when
Size: 1993px × 1254px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
