火翅繁殖實錄 - 魚
By Steve
at 2010-03-19T13:46
at 2010-03-19T13:46
Table of Contents
進入本文前,之前的文獻整理沒有什麼迴響Q____Q,
所以我就自己再來回顧並繁殖一下,通通都是中文的應該會方便閱讀不少。
沒有想看囉哩囉唆的文獻與數據的版友,
可以直接跳到第四部分看仔魚照,
有興趣就可以回到第三部分看繁殖的方法。
(一)前言:
以前曾經在版上發過幾篇文,名為「水桶裡的大發現」,
目前第一篇已經被系統刪除,
還有三篇應該也存不久。
誠如前幾篇文章所言,那時的繁殖是屬於無心插柳,
這次則是刻意繁殖的。
文章第二部份簡述之前文獻中火翅的工母語環境,
第三部分為這次小弟繁殖的設備、過程
第四部分是給鄉民的沒圖沒真相,以及後續的仔魚繁殖。
(二)有關火翅的環境,文獻簡單歸納
要繁殖火翅,先要分公母,
那種水館在賣兩公分以下的個體就不用談繁殖了。
兩三年前說火翅的亞成魚是指已經有發色,但還沒到兩公分的個體,
以現在台北水街賣的火翅而論,大概連亞成魚都算不上。
火翅要如何分辨公母?
1.不才之前有在版上發文,可以參閱。
2.或者是Tyson R. Robert 2007一文中,p.3的圖片
(http://rmbr.nus.edu.sg/rbz/biblio/55/55rbz131-140.pdf)
3.至於Alexander A. Priest 2008文中第一頁的公母圖片選樣與拍設得不夠優秀,
(http://www.faas.info/download/pub_awards/2008/010-001-GCAS.pdf)
威基是用這段文字來分辨公母,但其實多是節錄Alexander的文章
(cite by http://en.wikipedia.org/wiki/Danio_margaritatus)
This species shows some sexual dimorphism: males have a bright blue background
color (dull blue-green in females), and their fins are more brightly colored.
The tail end of their bodies (the caudal peduncle) is also higher than in
females. The body is sprinkled with small, pearly dots. The back is bronzy
green, and the belly in females is yellowish-white.
The gill covers are transparent, letting the blood-red gills shine through.
The males' fins (except the pectoral fins), which they will prominently
display to conspecifics, show two parallel black lines with a bright red area
in between; on the tailfin this pattern is present twice (once on each lobe)
and the outer black band is vestigial. Females have a weaker version of the
pattern in the tail and dorsal fins only, sometimes in the anal fin too.
分辨完公母後,
再看飼養的環境。
引述Alexamder A. Priest的文章
溫度攝氏21~25.5
pH 6.8~7.5
硬度GH:微硬到微軟。
(三)繁殖:
Tyson R. Robert 2007末兩頁有說明於缸中如何繁殖,
威基也有告知有關Redrocuction。
讓我來說說我的作法與心得。
雖然有不少研究都說明穩定的環境與光照對魚產卵是有正面的效果,
但是這並非「必要條件」。
我這次繁殖的一公二母皆是剛從版友手中購得,
無論環境或光照都絕對與之前版友的不同,
但仍然可以成功繁殖。
這次繁殖是使用雅伯的大型隔離盒,缸外型(缸外與缸內都很好用,內部可再隔小格)。
此容器容量約3L,我並未設置加溫棒與添加過濾器等,
僅依靠旁邊的魚缸,獲取一點額外的溫度,
那幾天隔離盒水溫大概在22~23間。
水完全沒有調整過,台北市的水過三胞胎(無樹酯)除氯後入缸,
下面撲了兩片厚厚的三角MOSS綁白鐵網,
作為產卵之用。
繁殖並不一定要用這款草種,但一定要有類似的介質提供卵的附著。
按照Tyson R. Robert 2007文章所說魚卵大概會在三天孵化,
故整個繁殖的過程我給予三天的時間,之後就將親魚撈起,避免仔魚孵化後被親魚掠食。
本次繁殖我選了一隻兩公分多的公魚,
以及兩隻母魚,其中一隻母魚肚子有明顯隆起,可能為卵的緣故。
如前述,隔離盒倚貼草缸,故光照亦同,一天約八小時,下午一點到九點。
繁殖中仍然給予餵食,
三天後將公母魚撈出隔離盒,並把底部的水與MOSS靜置在一個較為淺而廣的容器,
以方便觀察與撈取仔魚,
我選用明治冰淇淋米色塑膠盒。
再經過三天,第一隻小魚出生,
「今天」為第四天時,又有兩隻仔魚,
另有一隻不確定是剛孵出抑或是發育不完全的仔魚(後段有圖),
之後是否還會有仔魚孵化目前不得而知。
(四)有圖有真相
http://yfrog.com/es089fj
(這隻後來已經成功打開,可見拍攝時為剛從卵出來的模樣,運氣真好呢!)
http://yfrog.com/es091ej
仔魚大小約為3mm,可用微蟲餵食,亦可使用市售人工輪蟲,
唯人工輪蟲容易污染水質,使用時需注意。
約兩週後可改為無節幼蟲。
仔魚的飼養上,由於仔魚對水質污染並不高,
故按照上次的繁殖經驗,
1L養十隻仔魚,維持一週1/3的換水已然足夠,
另可額外使用浮萍作為吸收氨氮。
直至仔魚體型接近一公分時可考慮換缸。
按Tyson R. Robert2007文中所言,
火翅母魚的卵為分批成熟並分批產卵,
故不大會有像孔雀魚一次生四五十顆卵的情況,
有興趣繁殖火翅的版友大可多嘗試幾次。
----
上次水桶一文是在蜜月前,
這次繁殖成功是在生日前,
莫不是皆為上天贈與的禮物?
附上一首最近很喜歡的歌
steel heart的she's gone,兩個不同版本
http://www.youtube.com/watch?v=FxnGaURm3B8
http://www.youtube.com/watch?v=tR-5ZStR8r4
這傢伙竟然紅不起來,Vitas卻響透半邊天,果然搖滾已死。
最近HBO的Rocker Star就是他在幕後幫馬克霍伯華格配音的喔,
這部電影另一個賣點就是還很甜的Jennifer Aniston >//////<
--
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魚
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