Taxonomy & naming
Synodontis ruandae was described by the German ichthyologist Harald Matthes in 1959. Matthes carried out extensive ichthyological surveys of Central African waters, including the Congo basin and the Rwanda-Burundi region, during the 1950s and 1960s, describing numerous Synodontis and other Congo-basin fish species from that work. The species belongs to the family Mochokidae — the African squeakers and upside-down catfishes — and to the large genus Synodontis, which holds well over a hundred valid species distributed across tropical and subtropical Africa. The Catalog of Fishes (Eschmeyer, California Academy of Sciences) treats Synodontis ruandae as the valid combination.
The genus name Synodontis is an old term applied to these catfishes, conventionally interpreted as deriving from the Greek syn- (together) and odous (tooth), a reference to the teeth of the lower jaw. The species epithet ruandae is a Latinized toponym directly referencing Rwanda, most plausibly the Lake Kivu or upper Congo/Nile drainage region within or near that country where Matthes conducted fieldwork. Approximate pronunciation: sin-oh-DON-tis roo-AN-dye.
Morphology
Detailed morphometric data for Synodontis ruandae were not accessible for this article. Like other members of the genus, it can be expected to share the classic squeaker body plan: a broad, dorsally flattened head, a sturdy body, three pairs of barbels, entirely scaleless skin, and the stiff, serrated, locking spines in the dorsal and pectoral fins that characterise Synodontis — a genus-level inference rather than a documented description of this species specifically.
Habitat
Synodontis ruandae is native to the Rwanda region of East-Central Africa, most plausibly associated with the Lake Kivu basin or the upper Congo/Nile watershed given Matthes's documented fieldwork in that area. Specific water chemistry and finer-scale habitat details for this species were not accessible for this article.
Feeding
No dietary study specific to Synodontis ruandae was accessible for this article. Synodontis species as a group are generally benthic omnivores, foraging over the substrate for aquatic invertebrates and some plant material, often nocturnally — a genus-level inference, not a finding reported for this species specifically.
Mating
No courtship behaviour has been documented for Synodontis ruandae in the sources accessible for this article. Most Synodontis species are conventional egg-scatterers rather than the brood-parasitic cuckoo catfish behaviour unique to S. multipunctatus of Lake Tanganyika, but this has not been confirmed specifically for S. ruandae.
Breeding
Reproductive biology of Synodontis ruandae is not documented in the sources accessible for this article. Most Synodontis species are egg-scatterers over substrate with no parental care, a genus-level generalisation rather than a confirmed account of this species specifically. There is no established aquarium-breeding record for this species.
In the aquarium
Synodontis ruandae is not established in the aquarium hobby and has no documented husbandry record. By genus-level analogy, any Synodontis kept in the aquarium requires care around its entirely scaleless skin — significantly more sensitive than scaled fish to copper-based medications — and around the stiff, serrated locking spines that can tangle in nets and injure the keeper's hands; these are general Synodontis-care points rather than documented guidance specific to this species.
Conservation
Synodontis ruandae carries a CARES Fish Preservation Program priority listing of Vulnerable (CVU). A current IUCN Red List category was not confirmed for this article, and specific population trend or threat data for this species were not accessible here. Rwanda's Lake Kivu basin and upper Congo/Nile watershed have experienced substantial human population pressure, land-use change, and water-quality stress in recent decades, which would be expected to be relevant threats at the regional level, though not confirmed as specific findings for this species.