 |
| |||
| dwergmeervallen m (Ictaluridae) | |||
| meerval m (Ictaluridae) | |||
| |||
| bruine dwergmeerval (Ameiurus nebulosus, Ictalurus nebulosus) | |||
| zwarte dwergmeerval (Ictalurus melas, Ameiurus melas); bruine dwergmeerval (Ictalurus nebulosus, Ameiurus nebulosus) | |||
| Zwergwelse: 3 phrases in 2 subjects |
| Fish farming pisciculture | 2 |
| Natural resourses and wildlife conservation | 1 |