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Tetraodon nigroviridis

 

 
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Tetraodon nigroviridis
 
 
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Tetraodon nigroviridis is one of the pufferfish
Pufferfish

Tetraodontidae is a family of primarily marine and estuarine fish. The family includes many familiar species which are variously called puffers, balloonfish, blowfish, bubblefish, globefish, swellfish, toadfish, and toadies....
 known as the green spotted puffer
Green spotted puffer

A green spotted puffer may be one of several different species of fresh or brackish water pufferfish in the genus Tetraodon, including:*Tetraodon fluviatilis...
 (the other being Tetraodon fluviatilis
Tetraodon fluviatilis

The green puffer, Tetraodon fluviatilis, is a species of Tetraodon, the largest genus in the pufferfish family .Habitat ? Asia: Bangledesh, India, Sri Lanka, Philippines....
). It is found across South
South Asia

South Asia, also known as Southern Asia, is the southern region of the Asian continent, which comprises the sub-Himalayan countries and, for some authorities , also includes the adjoining countries on the west and the east....
 and Southeast Asia
Southeast Asia

Southeast Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India and north of Australia....
 in coastal freshwater
Freshwater

Freshwater is a word that refers to bodies of water such as ponds, lakes, rivers and streams containing low concentrations of dissolved salts and other total dissolved solids....
 and brackish water habitats. Tetraodon nigroviridis reaches a maximum length of about 15 cm (5.9 in). In February 2009 it was successfully bred in captivity at University of Florida using a new variation of the ovarian lavage technique.

t Tetraodon nigroviridis are found in freshwater streams, rivers, and flood plains; young are found in brackish water.






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Encyclopedia


Tetraodon nigroviridis is one of the pufferfish
Pufferfish

Tetraodontidae is a family of primarily marine and estuarine fish. The family includes many familiar species which are variously called puffers, balloonfish, blowfish, bubblefish, globefish, swellfish, toadfish, and toadies....
 known as the green spotted puffer
Green spotted puffer

A green spotted puffer may be one of several different species of fresh or brackish water pufferfish in the genus Tetraodon, including:*Tetraodon fluviatilis...
 (the other being Tetraodon fluviatilis
Tetraodon fluviatilis

The green puffer, Tetraodon fluviatilis, is a species of Tetraodon, the largest genus in the pufferfish family .Habitat ? Asia: Bangledesh, India, Sri Lanka, Philippines....
). It is found across South
South Asia

South Asia, also known as Southern Asia, is the southern region of the Asian continent, which comprises the sub-Himalayan countries and, for some authorities , also includes the adjoining countries on the west and the east....
 and Southeast Asia
Southeast Asia

Southeast Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India and north of Australia....
 in coastal freshwater
Freshwater

Freshwater is a word that refers to bodies of water such as ponds, lakes, rivers and streams containing low concentrations of dissolved salts and other total dissolved solids....
 and brackish water habitats. Tetraodon nigroviridis reaches a maximum length of about 15 cm (5.9 in). In February 2009 it was successfully bred in captivity at University of Florida using a new variation of the ovarian lavage technique.

Ecology

Adult Tetraodon nigroviridis are found in freshwater streams, rivers, and flood plains; young are found in brackish water. It is also found in mangrove
Mangrove

Mangroves are trees and shrubs that grow in saline water coastal habitats in the tropics and subtropics. The word is used in at least three senses: most broadly to refer to the habitat and entire plant assemblage or mangal, for which the terms mangrove swamp and mangrove forest are also used, to refer to all trees and...
 forests. This is however disputed and the exact habitat of this fish is not yet fully known. Diet consists primarily of snails, but includes small invertebrates such as mollusks, crustaceans, and some plant material. This species may also be lepidophagous
Lepidophagy

Lepidophagy is a specialised feeding behaviour in fish that involves eating of Scale of other fish. Lepidophagy is widespread, having been independently evolved in at least five freshwater families and seven marine families....
.

Genetics

Tetraodon nigroviridis has the smallest known vertebrate
Vertebrate

Vertebrates are members of the subphylum Vertebrata, chordates with Vertebras or Vertebral columns. The grouping sometimes includes the hagfish, which have no vertebrae, but are genetically quite closely related to lampreys, which do have vertebrae....
 genome
Genome

In classical genetics, the genome of a diploid organism including eukarya refers to a full set of chromosomes or genes in a gamete; thereby, a regular somatic cell contains two full sets of genomes....
, roughly 340 million base pairs, and has thus been selected as a model organism for genetics
Genetics

Genetics , a discipline of biology, is the science of heredity and Genetic variation in living organisms. The fact that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding....
. In 2004 a draft of its genome sequence was published.

Commercial importance

Tetraodon nigroviridis is by no means a food fish, but has some value as bait
Bait (luring substance)

Bait is any substance used to attract prey, e.g. in a mousetrap....
 and is very widely traded as an aquarium fish
Fishkeeping

Fishkeeping is a popular hobby concerned with keeping fish in the home aquarium or garden pond....
, and is sometimes mistaken as the Ceylon Puffer, or Tetraodon fluviatilis. Tetraodon nigroviridis also has some degree of value as a lab animal, in particular in the field of genetics, because it has the same number of genes
Gênes

G?nes is the name of a d?partement in France of the First French Empire in present Italy. It was named after the city Genoa. It was formed in 1805, when Napoleon Bonaparte occupied the Republic of Genoa....
 as human beings but in a genome about one-tenth the size.

Aquarium care

While Tetraodon nigroviridis may be found in fresh as well as brackish water in the wild, under aquarium conditions this species appears to do best in brackish conditions where the salinity is maintained at around 50% that of normal seawater. Adults of this species may also be kept in saltwater aquaria
Marine aquarium

A marine aquarium is an aquarium that keeps ocean plants and animals in a contained environment. Marine aquaria are further subdivided by hobbyists into fish only , fish only with live rock , and reef aquarium....
. Since these fish produce a large amount of waste they are best given 30 gallons of water or more per specimen. Water must be of the highest quality, with pH maintained at 8.0 and no ammonia, nitrites, and negligible nitrates, so it is common for puffer owners to do weekly water changes of 50% to maintain this level of purity. It is a solitary predator in the wild and thus, with some exceptions, does not make a good tankmate. Food choices are live snails (required for keeping their teeth worn down), and fresh, raw oysters, clams, shrimp, scallops, and black mussels. Small gut-loaded ghost shrimp, crayfish, and crabs may also be given from time to time, and frozen bloodworms are also readily accepted.

See also

  • Tetraodon fluviatilis
    Tetraodon fluviatilis

    The green puffer, Tetraodon fluviatilis, is a species of Tetraodon, the largest genus in the pufferfish family .Habitat ? Asia: Bangledesh, India, Sri Lanka, Philippines....