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Ancistrus megacanthus Widholzer, Borsoi, Reis & Lehmann A., 2024 |
| Family: | Loricariidae (Armored catfishes), subfamily: Hypostominae | |||
| Max. size: | 12.44 cm SL (male/unsexed) | |||
| Environment: | demersal; freshwater | |||
| Distribution: | South America: Brazil. | |||
| Diagnosis: | Dorsal spines (total): 2-2; Dorsal soft rays (total): 7-7; Anal soft rays: 4-4. This species is distinguished by the following set of characters: well developed snout tentacles, pectoral-fin spine long, and exceeding half length of the pelvic-fin leading ray in males; dorsal and caudal fins plain dark brown to black, without lighter spots or bands; dark brown to black background body color; small white to yellow dots on dorsal surface; four branched rays on the anal fin (Ref. 132443). | |||
| Biology: | The species inhabits creeks at elevations near 100 meters, with swift waters lined with rocks and gravel. These water bodies are located within the Pampa biome, in a savanna landscape dominated by herbaceous vegetation. Trees primarily confined to riverbanks with soils composed of clay and gravel (Ref. 132443). | |||
| IUCN Red List Status: | Not Evaluated (N.E.) Ref. (130435) | |||
| Threat to humans: | harmless | |||