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    Baensch Paper Published on Hawaiian Resplendent

    Years back Frank Baensch of RCT was the first to successfully breed Centropyge resplendens (2004) and Centropyge fisheri (2001), and then subsequently hybridize the two in 2006. In nature the two fish would never cross paths, but with a little help from Mr. Baensch the Hawaiian Resplendent Angelfish was born. Today RCT is no longer […]

    Centropyge resplendens

    Years back Frank Baensch of RCT was the first to successfully breed Centropyge resplendens (2004) and Centropyge fisheri (2001), and then subsequently hybridize the two in 2006. In nature the two fish would never cross paths, but with a little help from Mr. Baensch the Hawaiian Resplendent Angelfish was born. Today RCT is no longer breeding angelfish, but Frank is releasing information via scholarly articles to share his success stories.

    above : C. resplendens below : Hawaiian Resplendt (C. resplendens x C. fisheri)

    Hawaiian Resplendent Angelfish

    Most recently Baensch and Tomaru published the paper Captive hybridization of two geographically isolated pygmy angelfish species, Centropyge fisheri and Centropyge resplendens. In this study everything from spawning to post-meta is carefully documented. The paper also offers evidence of the sexual viability of this hybrid, shining light on the close phylogenetic releationship among many dwarf angels.

    Interestingly, the fish shown here are owned by Mr. Mishima, an aquarist in Japan, who has  paired a Hawaiian Resplendent with a wild C. resplendens shown here.  Check out our past coverage: Hawaiian Resplendent meets Wild Resplendent.

    Check out the abstract below:

    “This study documents the rearing of two pygmy angelfish species, Centropyge fisheri and Centropyge resplendens, and the early life history and reproduction of their hybrid offspring. A C. fisheri female, collected from Hawaii, and a C. resplendens male, captive-bred from parental stock collected from Ascension Island, were maintained at the hatchery facility for 7 months. Continuous spawning was achieved at a photoperiod cycle of 14L:10D and a water temperature of 26·5° C, range ±1° C. Over the 110 day period, the C. fisheri female spawned 102 times, 57% of which resulted in embryos (fertilized eggs). The mean ±s.d. fecundity per spawn was 730 ± 459 eggs (range 52–1967). Fertility (% eggs that developed into embryos) of all eggs that were preserved was 22·4 ± 25·6%. A total of 235 hybrid juveniles were raised through metamorphosis with an average larval survival of 16·4%. Eight F1hybrid juveniles isolated for further study began to display signs of reproductive behaviour c. 300 days post-hatch (dph). Spawn resulting in non-fertile eggs were first obtained 319 dph, and fertilized eggs developing into embryos were obtained after 411 dph from at least two female individuals. While no attempt was made at rearing the F2 larvae, embryo and larval development were normal up to 8 dph. Reproduction and development observed for all hybrid generations in this study were normal, similar to other Centropyge species and indicates a very close phylogenetic relationship between what are currently considered distinct species, e.g. C. fisheri and C. resplendens.”

    4 Comments

    1. nicholassadaka
      February 25, 2010 at 8:53 AM | Permalink

      Wow, I can't imagine how much work went into that. Fantastic information!

    2. Anonymous
      February 25, 2010 at 2:53 PM | Permalink

      Wow, I can’t imagine how much work went into that. Fantastic information!

    3. February 25, 2010 at 12:27 PM | Permalink

      I look forward to what Frank does next! Whatever it will be, Im sure there will be some innovation behind it….

    4. February 25, 2010 at 6:27 PM | Permalink

      I look forward to what Frank does next! Whatever it will be, Im sure there will be some innovation behind it….

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