五點鉛筆 (Nannostomus espei)

五點鉛筆體長大概 4cm,  產自南美北部國家法屬奎內亞的馬札魯尼水系 Mazarui river system, 身體長有一道金屬橫帶, 其下是一道暗色色斑, 由口器一直伸展至尾柄位置,  而體側的五顆黑斑, 是為這魚主要的標記; 該種個性溫馴, 飼養容易, 唯法屬奎內亞並非出口觀賞魚的主流國, 輸出市場批次極不穩定, 因此導致價格高昂, 未被大眾玩家所接受

三線鉛筆 (Nannostomus trifasciatus)

三線鉛筆體長大概 4cm, 身體長有三條橫向黑帶, 上及中線黑帶較粗, 由吻部伸展至尾鰭前為止, 腹部下線黑帶較幼; 上唇, 胸斑, 尾鰭, 背鰭, 臂鰭, 腹鰭, 俱長有紅色的色斑; 個性尚算溫馴, 但同族之間也偶會互鬥, 飼養上宜種植一些浮水植物, 以作為牠們的安居之所

三線鉛筆產地分佈廣泛, 以下是節錄自seriouslyfish 對該種的產地報告:-

Type locality is ‘Amazon River near mouth of Rio Negro and Tabatinga, Brazil’, but this species is widespread throughout rivers of Guyana plus the western Amazon basin in Brazil, Peru, Colombia, and Bolivia. Records exist from most major Amazon tributaries in this region including the Negro, Branco, Madeira, Guaporé/Iténez, Juruá, Japurá, Putomayo, Javari, Napo, Nanay, Ucayali, and Marañón.

Seriouslyfish 對該種的報告原文

綠線鉛筆 (Nannostomus marilynae)

個性文靜可愛的綠線鉛筆, 體長大概只有3cm, 身體長有一條金屬色青線及三條橫向黑線, 上線及中線較粗, 中線由吻部伸展至尾鰭為止, 腹部下線黑帶較幼, 黑線末端近尾鰭位置長有紅色的色斑; 市場常接觸到的綠線鉛筆, 每每都是來自哥倫比亞線的品種, 其實在內格羅內的其他小支流, 還有不少綠線鉛筆的地域種不斷地被採集得到, 偶然也會混雜綠蓮燈一起輸入

小紅鉛筆 (Nannostomus marginatus from upper rio negro)

內格羅型小紅鉛筆, 體長大概只有3cm, 身體呈金黃色, 其上長有三條橫向黑帶, 上及中線黑帶較粗, 由吻部伸展至尾鰭為止, 腹部下線黑帶較幼; 體側, 尾鰭, 背鰭, 臂鰭, 腹鰭, 俱長有紅色的色斑, 而體側那紅色橫帶色斑與中間黑帶重疊, 由腮後一直展至尾鰭位置, 該位置呈紅兩點狀, 有別於奎內亞型的小紅鉛筆

小紅鉛筆產地分佈廣泛, 以下是節錄自seriouslyfish 對該種的產地報告:-

Type locality is ‘Maduni Creek, Guyana’, and this species is widely-distributed throughout Guyana and Suriname, plus the middle-to-lower Amazon basin east of the Andes mountains in Peru, Colombia, and Brazil.
Records thus exist from various major river systems including the Rupununi, Takutu, Essequibo and Demerara in Guyana, the Nickerie and  Courantyne/Corantijn in Suriname, Inírida and Caquetá in Colombia, the Ucayali, Javari, Ampiyacu, and Putumayo in Peru, the Napo in Ecuador and Peru, Juruá in Brazil, and throughout most major left-bank tributaries of the Amazon in Brazil, including the Japurá, Negro, Branco, and Trombetas.
Records from the upper Río Orinoco in Venezuela also exist but may require confirmation.

Seriouslyfish 對該種的報告原文

一線鉛筆燈 (Nannostomus unifasciatus "Rio orinoco")

一線鉛筆燈 (Nannostomus unifasciatus), 俗名 One-lined Pencilfish, 因身體上長有一條黑寬帶而命名, 外型及日常動態, 與其共生在同一流域的騎士鉛筆燈 (Nannostomus eques) 非常相似, 特徵是尾鰭下葉長有一紅印, 黑帶生長位置由吻部伸展至尾鰭, 而且會隨狀態表現及外界影響, 表現時深時淺, 並喜愛集結於有掩護物如枯木或水草叢的地方活動, 泳姿有如在水中飄浮的梗枝, 藉此被過獵食者的攻擊, 個性非常溫和;

一線鉛筆燈的產地分佈廣泛, 據悉該種有兩個不同產地, 尾斑表現有差異的地域種存在, 而以下是節錄自seriouslyfish 對該種的產地報告:-

Type locality is given as ‘near mouth of Rio Negro, Brazil’, but this species is currently accepted to range throughout much of the upper Amazon basin in Brazil, Bolivia, and probably Colombia, plus the upper Orinoco system in Colombia and Venezuela, Essequibo and Demerera rivers in Guyana.
An introduced population exists in Trinidad and Tobago.
Records exist from various tributary drainages including the rios Negro, Jutaí,  in the Amazon, and the Casiquiare, Guaviare, Inírida, and Vita in the Orinoco basin.

Seriouslyfish 對該種的報告原文

騎士鉛筆燈 (Nannostomus eques "Rio Orinoco")

騎士鉛筆燈 ((Nannostomus eques), 俗名 Hockystick Pencilfish, 由於外型像似馬球棍而得名, 尾鰭下葉及臀鰭呈暗紅色彩, 但日常會被身體基部, 由吻部伸展至尾鰭位置的黑班所覆蓋, 黑斑會隨狀態表現時深時淺, 並喜愛集結於有掩護物如枯木或水草叢的地方活動, 泳姿有如在水中飄浮的梗枝, 藉此被過獵食者的攻擊, 個性非常溫和;

而騎士鉛筆燈的產地分佈廣泛, 以下是節錄自seriouslyfish 對該種的產地報告:-

Described from the Peruvian Amazon above Tabatinga, the latter being located in the Três Fronteiras region of Amazonas state,  northwestern Brazil, where the borders of Brazil, Peru, and Colombia meet.
It’s since been recorded throughout the central and upper Amazon region in Brazil, Peru, and Colombia including the rios Tapajós, Trombetas, Madeira, Negro, Japurá, Içá, and Putomayo, and is also known from the Orinoco drainage in Venezuela and and Colombia (Guaviare and Inírida tributary systems) plus various rivers of Guyana including the Essequibo and Curuni.
Genetic reserach has revealed that populations from the upper and middle/lower rio Negro in Brazil represent separate evolutionary units and do not hybridise at the one locality where they occur sympatrically (the Igarapé Jacuná, a tributary of the middle Negro). 

Seriouslyfish 對該種的報告原文


小紅鉛筆 (Nannostomus marginatus)

個性文靜可愛的小型紅鉛筆, 體長大概只有3cm, 身體呈金黃色, 其上長有三條橫向黑帶, 上及中線黑帶較粗, 由吻部伸展至尾鰭為止, 下線黑帶較幼, 生長在腹部位置, 中線黑帶位置, 背鰭, 臂鰭及腹鰭上, 長有紅色的色斑, 色彩鮮明, 而且對食餌不挑, 可算是飼養容易的入門種;

小型紅鉛筆產地分佈廣泛, 以下是節錄自seriouslyfish 對該種的產地報告:-

Type locality is ‘Maduni Creek, Guyana’, and this species is widely-distributed throughout Guyana and Suriname, plus the middle-to-lower Amazon basin east of the Andes mountains in Peru, Colombia, and Brazil.
Records thus exist from various major river systems including the Rupununi, Takutu, Essequibo and Demerara in Guyana, the Nickerie and  Courantyne/Corantijn in Suriname, Inírida and Caquetá in Colombia, the Ucayali, Javari, Ampiyacu, and Putumayo in Peru, the Napo in Ecuador and Peru, Juruá in Brazil, and throughout most major left-bank tributaries of the Amazon in Brazil, including the Japurá, Negro, Branco, and Trombetas.
Records from the upper Río Orinoco in Venezuela also exist but may require confirmation.

Seriouslyfish 對該種的報告原文

酒紅鉛筆 (Nannostomus beckfordi var. "super red")

一個紅肚鉛筆 (Nannostomus beckfordi) 的近似種, 昨年以櫻桃鉛筆之名在市場通貨, 而該品種在日本的通貨名為 (Nannostomus beckfordi var. "super red"), 是東南亞的養殖魚種, 體長3cm, 個性溫和, 但同族間偶然亦會發生爭鬥, 當養穩後, 雄魚的頭及背部會發出濃烈的金屬色彩, 非常耀目; 與紅肚鉛筆相比, 這近似種的腹部紅斑卻沒有表現得那麼明顯, 反而紅色色彩主要分佈在黑線以上, 但在外型及習性上則甚為相似