Freshwater Fish Distribution

Abstract

Freshwater Fish Distribution Tim M. Berra With more than 29,000 species, fishes are the most diverse group of vertebrates on the planet. Of that number, more than 12,000 species are found in freshwater ecosystems, which occupy less than 1 percent of the Earth's surface and contain only 2.4 percent of plant and animal species. But, on a hectare-for-hectare basis, freshwater ecosystems are richer in species than more extensive terrestrial and marine habitats. Examination of the distribution patterns of fishes in these fresh waters reveals much about continental movements and climate changes and has long been critical to biogeographical studies and research in ecology and evolution. Tim Berra's seminal resource, Freshwater Fish Distribution,maps the 169 fish families that swim in fresh water around the world. Each family account includes the class, subclass, and order; a pronunciation guide to the family name; life cycle information; and interesting natural history facts. Each account is illustrated, many with historical nineteenth-century woodcuts. Now available in paperback, this heavily cited work in ichthyology and biogeography will serve as a reference for students, a research support for professors, and a helpful guide to tropical fish hobbyists and anglers.

Pleistocene karyotypic divergence in Hoplias malabaricus (Bloch, 1794) (Teleostei: Erythrinidae) populations in southeastern Brazil

“…One of the resilient native species is Hoplias malabaricus (Bloch, 1794), the common trahira (Dergam et al, 2002), which is also ubiquitous in the Neotropical region (Berra, 2007). So far, 7 H. malabaricus karyomorphs have been described (reviewed in Bertollo et al, 2000) in sympatric and in allopatric conditions Rosa, 2006).…”

Ultimobranchial gland of freshwater catfish, Heteropneustes fossilis, in response to calcitonin administration

“…This is a common food fish and forms an important species in many water resources mainly ponds, ditches, swamps, marshes and sometimes occurs in muddy rivers (Rainboth 1996). This species is found in India, Pakistan, Sri Lanka, Nepal, Bangladesh, Burma, Thailand and Vietnam (Berra 2007).…”

CIRI KELAMIN SEKUNDER PADA ARWANA SILVER (Sclerophages macrocephalus) VARIETAS PINOH

“…), ada yang meruncing namun ada pula yang membulat. Sirip pungung pada ikan-ikan jantan blue acara (Aequidens pulcher) dan betok (Anabas testudineus (B)) panjang dan runcing (Lingga & Susanto, 1989;Berra, 2001;Axelrods et al, 2004). Bentuk sirip ekor menunjukkan bentuk yang membulat dengan pinggiran sirip yang melengkung dari ujung dorsal hingga bagian ventral.…”