| J | F | M | A | M | J | J | A | S | O | N | D | Country | Locality |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | Mozambique | Lake Cahora Bassa |
| 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | Zimbabwe | Lake Kariba |
| 111 | 1 | 4 | 2 | 6 | 4 | 10 | 21 | 21 | 18 | 8 | 111 | Rwanda | Lake Kivu |
| 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | 111 | Tanzania | Lake Tanganyika |