Cultured pygmy angelfish (Centropyge) hybrids at RCT.

Fish Breeding, Larval Fish and more…

Commercial propagation of marine ornamentals is a challenging endeavor, complicated by both biological and economic constraints. Many species remain uncultured due to their complex reproductive biology, others can only be raised on an experimental scale, and even for those that can be produced in large numbers, the process is often not cost-effective. Currently, less than 7% of the more than 2,000 traded marine aquarium fish species are farmed at any given time.

Throughout much of my career, I have focused on developing breeding techniques for marine ornamental fish species that are notoriously difficult to raise. In 2001, I founded Reef Culture Technologies (RCT) to pioneer culture techniques for pygmy angelfishes. Between 2002 and 2011, RCT successfully produced several rare and high-value pygmy angelfish species for the aquarium hobby.

The long and intricate larval phases of many reef fishes have made their aquaculture a rarity. To address this, I started the Larval Fish Project (LFP), which aims to develop techniques for rearing challenging reef fish species that have yet to be aquacultured. The project also captures the fascinating and seldom-documented development of marine fish larvae, from egg through to juvenile stages. Some of the project’s notable aquaculture achievements include triggerfish in 2010, anthias and butterflyfish in 2013, wrasses in 2015, surgeonfish in 2018 and frogfish in 2022.



Select Research Publications

Baensch, F. 2017. Dwarf Angelfish. In: Marine Ornamental Species Aquaculture. P. 282-297. Ricardo Calado, Ike Olivotto, Miquel Planas Oliver and G. Joan Holt (editors). Wiley Blackwell Publishing.

Baensch, F. 2016. Exploring aquarium wrasse aquaculture and breeding success with the Ornate Wrasse. CORAL 13 (6): 38–50. PDF available upon request.

Baensch, F. 2016. The long road to breeding butterflyfishes. CORAL 13 (3): 46–59. PDF available upon request.

Baensch, F. 2014. The Hawaii Larval Fish Project. CORAL 11 (2): 64–77. PDF available upon request.

Baensch, F. 2012. The trials and tribulations of culturing the Crosshatch triggerfish and the discovery of a potential first-food organism for small-mouthed reef fish larvae. CORAL 9 (2): 41–55. PDF available upon request.

Baensch F. U. and Tamaru, C. S. (2009b). Captive hybridization of two geographically isolated pygmy angelfish species, Centropyge fisheri and Centropyge resplendens. Journal of Fish Biology (2009) 75, 2571–2584. PDF available upon request.

Baensch, F. & Tamaru, C. S (2009a). Spawning and development of larvae and juveniles of the rare blue Mauritius Angelfish, Centropyge debelius, in the Hatchery. Journal of the World Aquaculture Society. 40, 425–439. PDF available upon request.

Frank Baensch. 2004. Herzogfische der Gattung Centropyge. Die Nachtzucht ist gelungen! In: Nachzuchten für das Korallenriff- Aquarium. p. 181-207. Dieter Brockman. Birgit Schmettkamp Verlag.

Baensch, F. 2003. Marine copepods and the culture of two new pygmy angelfish species. Freshwater and Marine Aquarium Magazine 26, 156–162.

Baensch, F. 2002. The culture and larval development of three pygmy angelfish species. Freshwater and Marine Aquarium Magazine 25, 4–12.

Baensch, F. 1996. The Reproductive Biology of the Pygmy Angelfishes (Genus: Centropyge) and their Spawning in Captivity. Thesis. The University of Hawaii, xv+44 pp.