A pilot study of the performance of captive-reared delta smelt Hypomesus transpacificus in a semi-natural environment

Tien Chieh Hung, Marlin Rosales, Tomofumi Kurobe, Troy Stevenson, Luke Ellison, Galen Tigan, Marade Sandford, Chelsea Lam, Andrew Schultz, Swee Teh

Research output: Contribution to journalArticle


A captive breeding programme was developed in 2008 for delta smelt Hypomesus transpacificus in reaction to dramatic population decline over several decades. We took 526 sub-adult captive-reared delta smelt and cultured them for 200 days without providing artificial food or water quality management to assess their performance once released in the wild. The results indicated captive-reared sub-adult delta smelt could survive in a semi-natural environment with uncontrolled water quality and naturally produced wild prey through spawning and into their post spawning phase.

Original languageEnglish (US)
JournalJournal of Fish Biology
StateAccepted/In press - Jan 1 2019



  • captive
  • delta smelt
  • refuge population
  • reintroduction
  • semi-natural environment

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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