GloFish in California: Legal Status Update

GloFish—genetically modified fluorescent zebrafish, tetras, and barbs—are legal to sell and own in California as of a 2015 court ruling.

Background

California's Fish and Game Code historically restricted genetically modified organisms (GMOs). The California Department of Fish and Wildlife (CDFW) initially deemed GloFish illegal under this statute. However, in 2015, a Sacramento County Superior Court judge ruled that the fluorescent protein trait—derived from coral and jellyfish genes—posed no threat to native ecosystems if released, and that the state had overreached in banning them.

Current Rules

• GloFish can be sold by licensed retailers and kept by hobbyists without a permit.
• They remain regulated as "restricted species" for commercial aquaculture (requiring a permit for large-scale breeding).
• Release into state waters is still prohibited for all non-native species.

The ruling aligned California with federal policy (FDA determined GloFish pose no significant risk) and the other 49 states where they have long been legal.