Open Water Farming of Pearlspot Etroplus suratensis (Bloch) in Low-Volume Cages

Padmakumar, K. G.; Manu, P. S.; Bindu, L.

doi:10.33997/j.afs.2009.22.2.041

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Etroplus of average body weight 0.28 g, when reared in inland saline groundwater ponds at stocking density of 10,000 fish/ha, attained a weight of 150 g in 90 days with a 40% crude protein diet (Kumar, Bhatnagar, & Garg, 2009). Padmakumar, Manu, and Bindu (2009) recorded that the fish of 6 g initial weight attained 180 g after 197 days in brackish water cages in Vembanadu lake, India, even though the crude protein content of the diet provided was 20% and stocking density was 200 fish/m 3 . While in the present investigation, 32% protein diet and 10 fish/m 3 stocking density was adopted.…”

Section: Discussionmentioning

confidence: 99%

Cage culture of Etroplus suratensis (Bloch, 1790) in a tropical reservoir in India and associated impacts on water and sediment quality

Parakkandi

Das

Saha

et al. 2021

J World Aquaculture Soc

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Cage culture of Etroplus suratensis (Pearlspot) was carried out in Krishnagiri reservoir, India, a highly productive reservoir to analyze the feasibility of growing this species in freshwater cages and to investigate the effect on selected environmental parameters. Fish of average weight 5.98 ± 0.52 g were stocked at 10 ind. m 3 in High-Density Poly-Ethylene floating cages (3 Â 3 Â 2 m) made of nylon knotless net with 12 mm mesh size. Fish were fed commercial pellet feed containing 32% protein at 5-3% of body weight a day. A reference point was fixed 100 m away from the cage site to compare the water quality as well as plankton abundance with the cage site. After 7 months, the fish grew to 90.31 ± 2.48 g, with low mean weight gain during the first 2 months, and a steady increase thereafter. Overall, the growth of Etroplus in terms of the analyzed parameters viz. specific growth rate, food conversion ratio, feed efficiency ratio, and protein efficiency ratio viz. 1.3 ± 0.013, 2.87 ± 0.08, 0.35 ± 0.01 and 1.01 ± 0.03, respectively, was found to be satisfactory in freshwater cages irrespective of low survival (52%). Zooplankton and phytoplankton density at the cage was significantly higher throughout the study, maybe due to the abundance of primary nutrients from the decomposition of leftover feed.

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Section: Discussionmentioning

confidence: 99%

Cage culture of Etroplus suratensis (Bloch, 1790) in a tropical reservoir in India and associated impacts on water and sediment quality

Parakkandi

Das

Saha

et al. 2021

J World Aquaculture Soc

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“…Pearlspot, Etroplus suratensis is a high‐value, non‐tilapia cichlid, considered one of the most suitable candidate species for diversified coastal aquaculture in south Asia (Biswas et al, 2013; Padmakumar et al, 2009). E .…”

Section: Introductionmentioning

confidence: 99%

“…

Pearlspot, Etroplus suratensis is a high-value, non-tilapia cichlid, considered one of the most suitable candidate species for diversified coastal aquaculture in south Asia (Biswas et al, 2013;Padmakumar et al, 2009). E. suratensis or green chromide is among one of the only three cichlid species native to Asia, namely Etroplus suratensis, E. maculatus and E. canarensis (Ng & Tan, 2010).

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confidence: 99%

Effect of stocking density on growth performance, plankton abundance, body composition and haematological parameters of Etroplus suratensis (Bloch, 1790)

Yadav

Chavan²,

Chadha

et al. 2021

Aquaculture Research

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A seed rearing experiment was attempted to evaluate the effects of stocking densities in the biofilm-based system reared with pearlspot, Etroplus suratensis on different aquaculture parameters. Pearlspot advanced fry of size (4.67 ± 0.04 cm/1.71 ± 0.03 g) stocked at four different stocking densities viz 50 fish (T 1 ); 100 fish (T 2 ); 150 fish (T 3 ) and 200 fish (T 4 ) m −3 in the biofilm-based rearing system and at the rate of 150 fish m −3 in the clear water fed (CWF) system tanks. The total ammonia nitrogen and dissolved oxygen levels in biofilm tanks with different stocking density were significantly lower than CWF. Diatom was found as dominant plankton in all biofilm treatment tanks in water as well as on substrate. The growth parameters were found to significantly decrease with increasing stocking density in the biofilm-based rearing system. The significant highest individual growth parameters and significantly lowest fish biomass were found in T 1 . Final fish biomass was found to increase with increasing stocking density up to 150 advanced fry m −3 and then reduced due to decreased survival. Body composition analysis of E. suratensis showed increased protein and decreased lipid levels in all biofilm-based rearing system treatments at different stocking densities compared with clear water fed system. The present investigation findings on plankton abundance, growth, body composition and blood parameters at different stocking densities will provide guidelines for selecting appropriate stocking density for pearlspot advanced fry to fingerling rearing in a low saline biofilm-based system without providing a supplementary diet.

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