Limnocnida tanganjicae
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| Limnocnida tanganjicae | |
|---|---|
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Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hydrozoa |
| Order: | Limnomedusae |
| Family: | Olindiidae |
| Genus: | Limnocnida |
| Species: | L. tanganjicae |
| Binomial name | |
| Limnocnida tanganjicae Günther, 1893 | |
| Synonyms | |
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Limnocnida tanganjicae, the great lakes jellyfish, is a species of freshwater hydrozoan in the family Olindiidae.[1][2] It is found throughout Africa at depths of between 20 cm and 100 meters.[1]
The subspecies L. t. subsp. victoriae is accepted as Limnocnida victoriae.[2]
Medusae settle down to form pale brown or yellow hydroids at between 20 and 25 °Celsius, five days after fertilisation. The hydroid stage is usually found on stems of aquatic plants at depths of up to 5 meters.[1] They may be found in flowing rivers, but are much more abundant in still, clear lakes. Horizontal migration takes places between 10 am and 3 pm, usually in the opposite direction to the wind.[1] Blooms can reach up to 3,000 medusae per cubic meter.[3]
It was found that at night the median depth is 13 meters, and 21 m at noon.[4]