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Rhadinocentrus ornatus, Ornate rainbowfish
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Rhadinocentrus ornatus
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Hippocampus-Bildarchiv
Teleostei (teleosts) >
Atheriniformes
(Silversides) >
Melanotaeniidae
(Rainbowfishes, blue eyes)
Etymology:
Rhadinocentrus:
Greek, rhadinos, -e, -on = soft, flexible + Greek, kentron = sting (Ref.
45335
)
.
More on author:
Regan
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; pelagic; pH range: 6.0 - 6.5; dH range: 4 - 8. Tropical; 20°C - 30°C (Ref.
2060
)
Oceania: northern New South Wales and southern Queensland in Australia.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 6.0 cm SL male/unsexed; (Ref.
44894
); 3.5 cm SL (female); common length : 4.0 cm SL male/unsexed; (Ref.
44894
)
Lives in coastal streams and often found in stagnant pools or streams with little or no flow. Inhabits creeks, backwaters of larger streams, ponds and dune lakes. Usually found in sandy coastal country (locally known as 'wallum') in slow-flowing, tannin-stained waters. Prefers the cover of submerged logs and branches, grassy banks, reeds and lily roots (Ref.
44894
). Occurs at temperature and pH ranging from 20°-28° C and 5.4-6.5 respectively. Eggs are laid among plants each day during the breeding season. Feeds on insects and their aquatic larvae, microcrustaceans and algae. Popular aquarium fish which readily breeds in captivity (Ref.
44894
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Allen, G.R.
, 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref.
5259
)
IUCN Red List Status (Ref.
130435
)
Vulnerable (VU)
(B2ab(iii)); Date assessed:
12 February 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.0 ±0.35 se; based on food items.
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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