Reproductive system

1. Bisexual : Carps, Perch, Cat fishes, etc.
2. Hermaphrodite: Seabass
3. Parthenogenetic: Amazon molly

• In Labeo rohita, testis are pinkish and smooth.
• Seminal vesicles are absent in teleosts (except Clarias and Heteropneustes).
• Testes are attached to the body wall and air bladder by mesorchia and ovum to body wall by

Egg color:

a) Young ( Whitish to greenish)

b) Adult ( Golden yellow)

• Process of formation of yolk in eggs is called
• Vitellogenin ( Calcium binding lipophosphoprotein) à synthesized in liver in presence of sex steroids.

Structure of vent:

a) Male: Concave

b) Female: Convex

• Water depth must be 1-1.5 m for better water quality.
• Dissolved oxygen (D.O) à 5-8 mg/l.