Effect of water hardness on growth and survival of fry of angelfish, Pterophyllum scalare (Lichtenstein, 1823)


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Authors

  • V R Vartak Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
  • V R Bhatkar Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
  • R D Bondre Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
  • S G Balsare Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India

Abstract

An experiment was conducted to study the effect of different levels of water hardness on survival and growth of two size groups (group A: 2.00 ± 0.20 cm and group B: 2.50 ± 0.20 cm) of fry of angelfish (Pterophyllum scalare). The gain in length was 1.9 ± 0.02 cm and 3.20 ± 0.04 cm in group A and B respectively in 100 mg l-1 CaCO3 hardness, which was superior among all the treatments. Survival was 100% in all treatments, but specific growth rate differed significantly within both the groups. The specific growth rate was 1.87 ± 0.07 and 2.81 ± 0.33 in group A and B, respectively in 100 mg l-1 CaCO3 hardness, which was significantly (P<0.05) higher than in
other treatments. Growth rates at 50 and 100 mg l-1 CaCO3 hardness levels were not significantly different (P>0.05) in both the size groups. Among treatments, the best growth results were obtained at 100 mg l-1 CaCO3 hardness. Growth was significantly suppressed at 200 and 300 mg l-1 CaCO3
hardness in both the size groups. The results indicated that 100 mg l-1 CaCO3 is the optimum level for growth and survival of angelfish fry.

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Author Biographies

  • V R Vartak, Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
    Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
  • V R Bhatkar, Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
    Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
  • R D Bondre, Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
    Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
  • S G Balsare, Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India
    Marine Biological Research Station, Peth Killa, Ratnagiri, Maharashtra - 415 612, India

Issue

Vol. 54 No. 4 (2007)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Vartak, V. R., Bhatkar, V. R., Bondre, R. D., & Balsare, S. G. (2011). Effect of water hardness on growth and survival of fry of angelfish, Pterophyllum scalare (Lichtenstein, 1823). Indian Journal of Fisheries, 54(4), 397-402. https://epubs.icar.org.in/index.php/IJF/article/view/6968