New Species of Cyphotilapia (Perciformes: Cichlidae) from Lake Tanganyika, Africa
New Species of Cyphotilapia (Perciformes: Cichlidae) from Lake Tanganyika, Africa
复制标题
非洲坦噶尼喀湖的Cyphotilapia新种（鲈形目：丽鱼科）
作者：
Tetsumi Takahashi;K. Nakaya
摘要报道了坦噶尼喀湖的一种鲤科鱼（cyhotilapia）。该新种在体表中央上下侧线之间有三排鳞片，明显区别于frontosa （C. frontosa）。此外，前者在纵向线上鳞片数量较多（34-36 vs 33-35）、上颌外牙较少（31-52 vs 39-62）、体型较高（43.3-51.2% SL vs 38.2-46.5%）、前背较长（37.5-44.9% SL vs 37.1-42.7% SL）、背鳍基部较长（57.1-64.6% SL vs 53.8-60.9% SL）和胸鳍较长（36.0-47.2% SL vs 31.3-41.7%）。该新种主要分布在坦噶尼喀湖南半部，而C. frontosa主要分布在坦噶尼喀湖北半部。
Abstract A second species of Cyphotilapia (Cichlidae) is described from Lake Tanganyika. The new species is clearly distinct from Cyphotilapia frontosa in having three scale rows between the upper and lower lateral lines at center of body (vs two rows in C. frontosa). Furthermore, a greater number of scales on the longitudinal line (34–36 vs 33–35), fewer outer teeth on the upper jaw (31–52 vs 39–62), higher body (43.3–51.2% SL vs 38.2–46.5%), longer predorsal (37.5–44.9% SL vs 37.1–42.7% SL), longer dorsal-fin base (57.1–64.6% SL vs 53.8–60.9% SL) and longer pectoral fin (36.0–47.2% SL vs 31.3–41.7%) also distinguish the former species. The distribution of the new species is restricted to the southern half of Lake Tanganyika, whereas C. frontosa is allopatrically distributed in the northern half of the lake.