Penjinakan Dan Budidaya Ikan Brek (Puntius Orphoides) Sebagai Upaya Menuju Diversifikasi USAhatani Ikan Domestication and Culture of Tinfoil Barb (Puntius Orphoides) as an Effort Toward Fish Farming Diversification

Aims of this research were to investigate hatching rate of Puntius orphoides eggs resulted from artificial spawning and the effect of different water inlet number with different water debit and food on growth rate and survival rate of P. orphoides fry. Experimental method with factorial pattern was used. The first factor was ponds culture without water inlet and with one water inlet (10 LPM/m³ water debit), two water inlets (20 LPM/m³ water debit), and three water inlets (30 LPM/m³ water debit). The second factor was feeding with pellet and Tubifex. Each treatment was repeated twice. Parameter measured was number of hatched egg, increasing of body weight, length and survival rate. The data was analyzed by one way anova and further analysis with Duncan test. Result showed that P. orphoides could spawn in culture ponds with hatching rate of the egg was 82%. The highest growth rate was reached in the ponds with three water inlets (30 LPM/m³ water debit), while the best survival rate was reached in culture ponds with three water inlets (30 LPM/m³ water debit). Pellet food and Tubifex gave the same effect on the fish growth

Reproduction Characteristics of Rice Field Eel (Monopterus Albus Zuieuw) on Several Functionally Changed Lands in Banyumas Regency

Functional change of agricultural lands into non-agricultural lands will obviously have an impact on the dimin-ished or loss of habitat of the rice field eels (Monopterus albus Zuieuw). The aim of this research was to un-derstand the difference between (1) reproduction parameters (fecundity, gonadal maturity level (GML), and gonadal maturity index (GMI); (2) histological features of female and male gonadal development (oogenesis and spermatogenesis); (3) range of body length in each sexual phase; and (4) range of body length in each GML stage of captured eel from 4 sub-districts of Banyumas regency, Central Java (Ajibarang, Sumpyuh, Banyumas, and Sumbang). The total number of captured subjects were 631 eels; which consisted of 155; 227; 157; and 92 eels from Ajibarang, Sumpyuh, Banyumas, and Sumbang, respectively. We observed oogenesis in the stages of GML-1 (chromatin nucleolar stages and perinucleolar stage); GML-II (cortical alveolar formation stage or globular yolk stage), GML-3 (late globular yolk stage), GML-IV (mature or ripe stage), and follicle atretic stage. Also, we observed male gonadogenesis and spermatogenesis in the intersex. The range of GMI of captured eels was between 0.023 and 0.686. Eel in GML-I, GML-2, GML-3, and GML-IV had GMI within the range of 0.023-0.096; 0.096-0.425; 0.427-0.686; and >0.686, respectively. Eels achieved stage of GML-IV in body length range of 22.6-34.5 cm in Sumpyuh, 22.6-38.5 cm in Ajibarang, and 26.6-34.5 cm in Banyumas. There was no eel with the status of GML-IV in Sumbang, which had the most residential or functionally changed lands in its area. Based on these findings, can be concluded that the condition of rice fields or habitat of eel in functionally changed lands may affect eel\u27s growth and gonad maturation