Keeping Half Beaks

Discussion in 'Freshwater Beginners' started by Chris123, Nov 22, 2009.

  1. Chris123

    Chris123Well Known MemberMember

    i aquired 2 half beaks at M.c.a.s auction.

    Can some one tell me about this fish?

    I have them in 29 currently with some tetras is that ok?

    All Advice is appreciated
    Thank CB
  2. Gouramiguy17

    Gouramiguy17Well Known MemberMember

    Yah it sounds ok, they are livebearers that get to be about 7-8cm and they are very hardy
  3. OP

    Chris123Well Known MemberMember

    Will they eat regualar flakes or smaller foods?
    Ps i have live foods also.
  4. pepetj

    pepetjWell Known MemberMember

    Info on Halfbeaks:

    From Scott, Peter W (1988, 1997), A Fishkeeper's Guide to Livebearing Fishes, Tetra Press, China.

    (I rephrased or made syntax changes when the author referred to information in previous paragraphs referring to other species)

    The Hemirhamphidae or Halfbeaks are fairly widespread in the streams and ponds of Southeast Asia and the Malay Peninsula (p.14)

    Some species of livebearers seem to prefer to be alone while others prefer company. Mixing genera of the smaller species seems to work well. For example, Quintana atrizona or Priapella intermedia mix well with Heterandria formosa. Demogenys (Halfbeaks) also prefer the company of other species (pp.19-20)

    Halfbeaks find [aquarium] salt beneficial, especially for breeding. The usual amount added is 0.5 - 1.5mg/l (half to one and a half teaspoon per gallon). If more than this is used, plant growth can be inhibited. (p.24)

    Most plants are fairly happy in the moderately hard, mildly alkaline water of livebearer aquarium. If the water is slightly saline to suit the more delicate Mollies of Halfbeaks, a number of plants can be acclimatized to living in [low-end] brackish water. It takes a few days of building up the salt level. Some browning of the leaves will occur, but the plants will settle down. (Author recommends Vallisnera spiralis, Valisnera tortifolia). (p.30)

    Halfbeaks are "one-sided" with their modified anal fin being referred to as the andropodium. The gonopodium bends to one side and the male can only mate with a female with a genital opening inclined to the opposite side. That is a right-handed male mates with a left-handed female. (p.36)

    As for food I found no specific info for Halfbeaks in the book so I figure you should post your experience so we all learn from it.

    Halfbeaks (and Poeciliids) can store sperm, so that one mating can provide enough for brood production over a period of several months. (p.40)

    Santo Domingo
    Last edited: Nov 22, 2009
  5. OP

    Chris123Well Known MemberMember


    Do they like floating plants?
    They tend to stay at the top most of the time
  6. pepetj

    pepetjWell Known MemberMember

    I figure they should love surface floating plants (e.g. duckweed) or plants that extend their leaves to the surface (e.g. Aponogeton species, Vallisnera americana, Amazon Swords, Crinum species -Onion Plants).

    Santo Domingo

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