Abstract. Dectobrycon armeniacus g. et sp. n. from Peru and Hyphessobrycon cyanotaenia sp. n. from Brazil (Teleostei: Characiformes: Characidae) are described. – Dectobrycon armeniacus g. et sp. n. is characterized by (1) fi ve to six teeth in the inner row of premaxilla, (2) six to eleven tricuspid or conical maxillary teeth, (3) dentary teeth not abruptly decreasing in size, (4) lateral line incomplete, (5) many small scales on the basis of caudal, reminiscent of the species of the genus Markiana, (6) four to fi ve supraneuralia, (7) scale formula: 7–8/(15–23) 36–38/6–7, (8) iv–v 23–27 (i) anal fi n rays and (9) a dark longitudinal band from gill cover to the tips of middle caudal fi n rays. – Hyphessobrycon cyanotaenia sp. n. is characterized by its (1) short anal fi n with 13–15 branched rays, (2) large scales: 5/(6–9) 27–30/3–4, (3) two tricuspid maxillary teeth, (4) body relatively high (2.48–3.08 times in standard length), (5) eye small (2.77–3.10 times in head length) and (6) a broad blue longitudinal band from tip of snout to the end of the middle caudal fi n rays.
另請參考AquaNet所顯示的魚隻圖片以及practicalfishkeeping的介紹, 此外Dectobrycon armeniacus這條魚與在台灣市面上出現的"金尾藍寶石燈"非常類似, 另外亦有神燈級玩家在亞瑟燈裏挑過類似的魚.
圖片連結: AquaLog News (credit: E. Schraml), rva