Peaceful betta

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Peaceful betta
Betta imbellis (male) 20100512 2.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anabantiformes
Family: Osphronemidae
Genus: Betta
Species:
B. imbellis
Binomial name
Betta imbellis
Ladiges, 1975

The peaceful betta or crescent betta (Betta imbellis) is a species of gourami native to Southeast Asia.

Contents

Betta imbellis has a pair of suprabranchial chambers that each house an air‐breathing organ known as the labyrinth organ, a complex bony structure lined with thin, highly vascularised respiratory epithelium. The labyrinth organ is a morpho‐physiological adaptation that allows the B. imbellis to extract oxygen from air. This adaptation allows the species to persist in extreme conditions. [2]

Despite being called peaceful betta, males of the species may fight each other especially when in breeding condition. [3]

Description

Betta imbellis grows to a maximum standard length of 6 cm (2.4 in). [4]

Distribution

Betta imbellis occurs naturally in Southern Thailand, Malaysia, and Indonesia, although it has been introduced to Singapore. [5]

Habitat

Betta imbellis lives in sluggish bodies of water, including rice paddies, swamps, streams and ponds, with a substrate composed of leaf litter and mud. [6]

Conservation status

Betta imbellis is listed as least concern by the IUCN Red List. It is still threatened by pollution and hybridization with released domesticated bettas (Siamese fighting fish) and other bettas in the B. splendens complex. [1]

Wild male Betta imbellis from Selangor, Malaysia Betta imbellis.jpg
Wild male Betta imbellis from Selangor, Malaysia

Diet

In the wild, Betta imbellis feeds on terrestrial and aquatic invertebrates. In captivity, the species is fed live or frozen food like Daphnia , Artemia or bloodworms. [7]

Breeding

The more colorful bodies of the males distinguishes them from the females, the males having blue hues in their brownish bodies. [3] Male and female individuals of Betta imbellis can live together outside breeding season, as well as getting together for breeding. Males will build a bubble nest before breeding. After mating the male catches the falling eggs and places them in his bubble nest. In 1–2 days the eggs hatch and continue absorb their yolk sack for 2 days. After that the fry become free swimming. Until this the male cares for them. [8]

Human use

Betta imbellis is found in the aquarium trade. [9]

Related Research Articles

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Gouramis, or gouramies, are a group of freshwater anabantiform fish that comprise the family Osphronemidae. The fish are native to Asia—from the Indian Subcontinent to Southeast Asia and northeasterly towards Korea. The name "gourami", of Indonesian origin, is also used for fish of the families Helostomatidae and Anabantidae.

<span class="mw-page-title-main">Three spot gourami</span> Species of fish

The three spot gourami, also known as the opaline gourami, blue gourami, and gold gourami, is a species of fish native to southeastern Asia, but also introduced elsewhere. This gourami gets its name from the two spots along each side of its body in line with the eye, considered the third spot. This species is of minor commercial importance as a food fish in its native range and is also farmed. It is also popular in the aquarium trade. The species reaches 15 cm in standard length.

<span class="mw-page-title-main">Kissing gourami</span> Species of freshwater fish

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<span class="mw-page-title-main">Paradise fish</span> Species of fish

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<span class="mw-page-title-main">Siamese fighting fish</span> Gourami native to Thailand

The Siamese fighting fish, commonly known as the betta, is a freshwater fish native to Southeast Asia, namely Cambodia, Laos, Myanmar, Malaysia, Indonesia, Thailand, and Vietnam. It is one of 73 species of the genus Betta, but the only one eponymously called "betta", owing to its global popularity as a pet; Betta splendens are among the most popular aquarium fish in the world, due to their diverse and colorful morphology and relatively low maintenance.

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<span class="mw-page-title-main">Bubble nest</span>

Bubble nests, also called foam nests, are created by some fish and frog species as floating masses of bubbles blown with an oral secretion, saliva bubbles, and occasionally aquatic plants. Fish that build and guard bubble nests are known as aphrophils. Aphrophils include gouramis and the synbranchid eel Monopterus alba in Asia, Microctenopoma (Anabantidae), Polycentropsis (Nandidae), and Hepsetus odoe in Africa, and callichthyines and the electric eel in South America. Most, if not all, fish that construct floating bubble nests live in tropical, oxygen-depleted standing waters. Osphronemidae, containing the Bettas and Gouramies, are the most commonly recognized family of bubble nest makers, though some members of that family mouthbrood instead. The nests are constructed as a place for fertilized eggs to be deposited while incubating and guarded by one or both parents until the fry hatch.

<span class="mw-page-title-main">Royal gramma</span> Species of fish

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<span class="mw-page-title-main">Croaking gourami</span> Species of fish

The croaking gourami is a species of small freshwater labyrinth fish of the gourami family. They are native to still waters in Southeast Asia and are distributed worldwide via the aquarium trade. Croaking gouramis are capable of producing a "croaking" noise using their pectoral fins.

<span class="mw-page-title-main">Pygmy gourami</span> Species of fish

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<span class="mw-page-title-main">Anabantoidei</span> Suborder of fishes

The Anabantoidei are a suborder of anabantiform ray-finned freshwater fish distinguished by their possession of a lung-like labyrinth organ, which enables them to breathe air. The fish in the Anabantoidei suborder are known as anabantoids or labyrinth fish, or colloquially as gouramies. Some labyrinth fish are important food fish, and many others, such as the Siamese fighting fish and paradise fish, are popular as aquarium fish.

<i>Betta persephone</i> Species of fish

Betta persephone is a species of labyrinth fish endemic to Malaysia where it is only known from Johor. This betta's specific epithet derives from the Greek goddess Persephone, queen of the Underworld, a reference to the largely blackish colouration of this fish.

<span class="mw-page-title-main">Thick-lipped gourami</span> Species of fish

The thick-lipped gourami is a species of gourami native to Southeast Asia, and is a popular aquarium fish.

<span class="mw-page-title-main">Moonlight gourami</span> Species of fish

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<i>Parosphromenus harveyi</i> Freshwater fish

Parosphromenus harveyi is a species of gourami endemic to Malaysia, where it is only known from Selangor. The most extreme freshwater habitats in Peninsular Malaysia is the peat swamp forest that consist of dark-coloured and highly acidic waters. Parosphromenus harveyi is known as licorice gourami, small labyrinth fishes located within the north Selangor peat swamp forest from the Tanjong Malim area in neighbouring Perak state at least one population distribution that exhibit a wide variety of morphological and behavioural traits. Species of the osphronemid genus Parosphromenus that stenotypic inhabitant of peat swamp forests and associated black water streams which has a very little light penetrates. Parosphromenus was established by Brown, 1987. Since 1950s, the additional taxa have been described on a sporadic basis and there are 20 recognised members at present.

<i>Betta smaragdina</i> Species of fish

Betta smaragdina, commonly known as the emerald green betta, blue betta or Mekong fighting fish is a species of gourami native to Southeast Asia. The species gets its green and blue colors due to refraction and interference of light that results from hexagonal crystals that are less than 0.5 micrometres. It is found in the aquarium trade.

<i>Betta</i> Genus of fish

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<i>Microctenopoma fasciolatum</i> Species of fish

Microctenopoma fasciolatum or the banded bushfish is an Anabantoid fish of the genus Microctenopoma. It is native to the Republic of Congo, the Democratic Republic of Congo and a few rivers in Cameroon, occurring in the lower and central parts of the Congo River. This species has numerous irregular dark stripes running vertically across its body, with a horizontal lighter stripe separating them. The banding becomes more pronounced as the fish ages. In males, the dorsal and annal fins are more pointed, and - in some populations - have bright iridescent blue spots. This species, like many related anabantoids lays its approximately 1000 eggs into a bubble nest. This fish grows to a size of 9 cm (3.5 in).

Betta cracens is a species of gourami endemic to the island of Sumatra in Indonesia. It is an inhabitant of freshwater swamp forest. This species grows to a length of 5.7 cm (2.2 in), typically inhabits blackwaters that have very soft and very acidic water and is a bubble nest brooder. The Latin term cracens means "slender" or "elegant" and is so named because of the fish's slender body. It was first described in 1996 by Heok Hui Tan and Peter K. L. Ng in The Raffles Bulletin of Zoology.

<i>Betta mahachaiensis</i> Species of fish

Betta mahachaiensis is a species of bubble-nesting betta native to Thailand, where it occurs naturally near the Gulf of Thailand. It is typically seen in stagnant waters in swamps, pools, and ponds. The species can be found in brackish waters, with salinity levels between 1.1 and 10.6 parts per thousand. Betta mahachaiensis is capable of living in both fresh water and brackish water, a trait unique among fish in the genus Betta. This species grows to a length of 5 to 6 cm. It is found in the aquarium trade.

References

  1. 1 2 Low, B.W. (2019). "Betta imbellis". IUCN Red List of Threatened Species . 2019: e.T181333A89804943. doi: 10.2305/IUCN.UK.2019-2.RLTS.T181333A89804943.en . Retrieved 20 November 2021.
  2. Tate, M.; McGoran, R. E.; White, C. R.; Portugal, S. J. (September 2017). "Life in a bubble: the role of the labyrinth organ in determining territory, mating and aggressive behaviours in anabantoids: the labyrinth organ and the anabantoids". Journal of Fish Biology. 91 (3): 723–749. doi:10.1111/jfb.13357. PMID   28868750.
  3. 1 2 Alderton, David (2019). Encyclopedia of Aquarium and Pond Fish. UK: Dorling Kindersley Limited. p. 103. ISBN   978-0-2413-6424-6.
  4. Froese, Rainer; Pauly, Daniel (eds.) (2014). "Betta imbellis" in FishBase . February 2014 version.
  5. "Betta imbellis, Crescent betta : Aquarium".
  6. "A Guide to Keeping Betta imbellis". June 2020.
  7. "Betta imbellis – Crescent Betta — Seriously Fish".
  8. "Betta Imbellis (Crescent or Peaceful Betta) Fish Care Guide". 19 July 2020.
  9. "Betta imbellis, Crescent betta : Aquarium".