Brachyhypopomus pinnicaudatus spermatogenesis
| Stage . | Diameter (μm) . | Nucleus . | Cytoplasm . | Location . |
|---|---|---|---|---|
| Spermatogonia | 5—10 | Spherical | Lightly basophilic | Isolated or in small groups |
| Peripheric condensed chromatin | ||||
| Spermatocyte | 3—5 | Spherical, granular chromatin | Thin | Grouped in cysts |
| Spermatid | 1.5—2.5 | Spherical, strongly basophilic | Scarce | Grouped in cysts |
| Spermatozoa | 0.5—2 | Spherical, strongly basophilic | Practically non visible | Mainly free in lumen |
| Stage . | Diameter (μm) . | Nucleus . | Cytoplasm . | Location . |
|---|---|---|---|---|
| Spermatogonia | 5—10 | Spherical | Lightly basophilic | Isolated or in small groups |
| Peripheric condensed chromatin | ||||
| Spermatocyte | 3—5 | Spherical, granular chromatin | Thin | Grouped in cysts |
| Spermatid | 1.5—2.5 | Spherical, strongly basophilic | Scarce | Grouped in cysts |
| Spermatozoa | 0.5—2 | Spherical, strongly basophilic | Practically non visible | Mainly free in lumen |
Male germ cells were classified according to their size and main morphological characteristics.