蓋斯半線脂鯉，為輻鰭魚綱脂鯉目脂鯉亞目脂鯉科的其中一個種，為熱帶淡水魚，分布於南美洲巴西亞馬遜河中游流域，體長可達3.2公分，棲息底中層水域，生活習性不明。
參考文獻
- Froese, R. & Pauly, D. (eds.) (2013). Hemigrammus geisleri. FishBase. Version 2013-12.
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