Fish , Passa Cinco stream , Corumbataí river basin , state of São Paulo , Brazil

The fishes of the present study were collected in Passa Cinco stream, a main river of Corumbataí river basin, Tietê drainage. Five sites were selected in that stream, downstream from headwater to its mouth, and six samplings were performed using the following fishery equipment: a sieve, electric fishery equipment, gill nets and fish-traps. 5082 individuals, 62 species, 18 families and 6 orders were captured. The orders Characiformes and Siluriformes were the most representative and the families Characidae and Loricariidae presented the largest in number of species. Introduction The neotropical area presents a great diversity of species of fresh water fish (Lowe-McConnell 1999). South America harbors, approximately, 60 families and about 5.000 species (Vari and Weitzman 1990). Thirty-eight families and 310 fish species were recorded for the upper Paraná river basin in São Paulo state (Langeani et al. 2007). The Passa Cinco stream is a main river of Corumbataí River basin and also one of the most preserved. Its name is a toponymy for being the fifth river the travelers of the 19th century found in the way from Rio Claro to Ipeúna: Ribeirão Claro, Servidão, Corumbataí, Cabeça and, finally, the Passa Cinco stream. Material and Methods This work was accomplished in Passa Cinco stream, a main river of Corumbataí river basin. It presents 525 km of drainage area and its course covers about 60 km, from its headwater in Serra da Cachoeira, a component of Serra de Itaqueri, located in the city of Itirapina, with altitude of 1000 m; to its mouth in Corumbataí river, with altitude of 480 m. Nowadays, 51.72 % of its surface is occupied by implanted pasture area, 14.13 % by sugarcane plantation, 15.67 % by native forest and 0.74% by scrubland (Valente and Vettorazzi 2002). Five sites were selected according to the stream orders, using a hydrological map with scale 1:50.000, from the headwater, at order 2, to its mouth, at order 6, with the following geographical coordinates: site 1 (order 2) 22°23'36" S, 47°53'08" W, site 2 (order 3) 22°22'10" S, 47°51'22" W, site 3 (order 4) 22°21'63" S, 47°48'48" W, site 4 (order 5) 22°24'74" S, 47°43'34" W and site 5 (order 6) 22°30'97" S, 47°39'49" W. In May, July, September and November of 2005, January and March of 2006, six samplings were accomplished in each sample site (proc. IBAMA n° 02027.000234/2005-05). The following fishery equipment were used: a sieve (used on bank vegetation for ten times in each site, except in site 1 due to vegetation absence and low volume of water), electric fishery equipment (used in the sites of smaller order sites 1, 2 and 3 in these places, passages of 50 m were determined, and the equipment was placed for a single time without a contention net), gill nets with meshes varying from 3 to 9 cm measured between adjacent knots (which were used in the sites of larger order sites 3, 4 and 5 used from afternoon to morning of the following day) and fish-traps (diameter = 20 cm and length = 50 cm; with bate, used in all sites). Check List 5(1): 112–117, 2009. ISSN: 1809-127X


Introduction
The neotropical area presents a great diversity of species of fresh water fish (Lowe-McConnell 1999).South America harbors, approximately, 60 families and about 5.000 species (Vari and Weitzman 1990).Thirty-eight families and 310 fish species were recorded for the upper Paraná river basin in São Paulo state (Langeani et al. 2007).
The Passa Cinco stream is a main river of Corumbataí River basin and also one of the most preserved.Its name is a toponymy for being the fifth river the travelers of the 19th century found in the way from Rio Claro to Ipeúna: Ribeirão Claro, Servidão, Corumbataí, Cabeça and, finally, the Passa Cinco stream.

Material and Methods
This work was accomplished in Passa Cinco stream, a main river of Corumbataí river basin.It presents 525 km 2 of drainage area and its course covers about 60 km, from its headwater in Serra da Cachoeira, a component of Serra de Itaqueri, located in the city of Itirapina, with altitude of 1000 m; to its mouth in Corumbataí river, with altitude of 480 m.Nowadays, 51.72 % of its surface is occupied by implanted pasture area, 14.13 % by sugarcane plantation, 15.67 % by native forest and 0.74% by scrubland (Valente and Vettorazzi 2002).
In May, July, September and November of 2005, January and March of 2006, six samplings were accomplished in each sample site (proc.IBAMA n° 02027.000234/2005-05).
The following fishery equipment were used: a sieve (used on bank vegetation for ten times in each site, except in site 1 due to vegetation absence and low volume of water), electric fishery equipment (used in the sites of smaller ordersites 1, 2 and 3 -in these places, passages of 50 m were determined, and the equipment was placed for a single time without a contention net), gill nets with meshes varying from 3 to 9 cm measured between adjacent knots (which were used in the sites of larger order -sites 3, 4 and 5used from afternoon to morning of the following day) and fish-traps (diameter = 20 cm and length = 50 cm; with bate, used in all sites).Garcia et  al., 2004). 1 -Sample site 1; 2 -Sample site 2; 3 -Sample site 3, 4 -Sample site 4; and 5 -Sample site 5.
Voucher specimens were deposited in the icththyological collection of the ichthyology laboratory of Universidade Estadual Paulista, in Rio Claro.The taxonomic classification system used followed Reis et al. (2003).

Results and Discussion
We captured 5082 individuals, distributed into 62 species, 18 families and 6 orders (Table 1).The orders Characiformes and Siluriformes were the most representative ones, corresponding to 48 % and 41 % of the species, respectively, which reflects the pattern found for South American ichthyofauna (Schaefer 1998) and the upper Paraná River basin (Castro and Menezes 1998).

Cyprinodontiformes, Gymnotiformes and
Perciformes contributed, each one, with 3% of the species and Synbranchiformes with 2 %.
The families Characidae and Loricariidae presented the largest number of species, contributing, together, with around 44 % of the captured species.The high contribution of species belonging to these families is common in several other studies (Garutti 1988;Uieda and Barreto 1999;Casatti et al. 2001;Castro et al. 2003;Súarez and Petrere 2005;Gomiero and Braga 2006a).
The captures of 61 species of fish in Passa Cinco stream reflect the richness of that system.Gerhard (unpublished data), sampling streams in Corumbataí river basin with electric fishery equipment, captured 51 species of fish from a total of 53.806 individuals.Fragoso (unpublished data), studying the Passa Cinco stream sub-basin, making uses of sieves, fishing-net, fish-traps and nets, captured 52 species, 48 of them in the main course.Other studies in which nets and/or sieves and fish-traps have been used in Passa Cinco stream can also be mentioned: Gomiero and Braga (2006b) and Cetra and Petrere (2006) that captured 28 and 27 fish species respectively.