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aqua International Journal 1(3)



Volume 1, Issue 3 – December 1994

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Volume 1, Issue 3 – December 1994

Banister, K. E.: Glossogobius ankaranensis, a new species of blind cave goby from Madagascar (Pisces: Gobioidei: Gobiidae), pp. 25-28.


A new species of cave-adapted goby, Glossogobius ankaranensis, is described from a subterranean river in the Ankarana massif in northern Madagascar. The only other hypogean fishes from the island are two species in the family Eleotrididae from the south west of the country. It is most probably related to the widespread epigean and euryhaline Glossogobius giuris (Hamilton, 1822).

Klossa-Kilia, E. and I.C. Ondrias: Age, growth and length-weight relationship of brown trout Salmo trutta L. in the upper stream of Acheloos River, Greece, pp. 29-36.


The age, growth, length-weight relationship and condition factor (k) of brown trout, Salmo trutta L. was studied in a small tributary of the Acheloos river. Totally 309 specimens were collected. The age group 1+ and 2+ formed the greatest part of the population. The annual growth was estimated with the back-calculation method based on the relationship between scale radius and body length in 101 individuals. The length-weight relationship can be described by the following equations: W = 0.0000266 L2.865 and W = 0.0000322 L2.825 for males and females respectively. The average codition factor (k) ranged from 1.16-1.25 and 1.10-1.21 for males and females respectively.

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Weight 0.25 kg
Dimensions 26.6 × 20.3 × 0.3 cm
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