Narrowing the Horizon: Using Known Invasives and Propagule Pressure to Focus Risk Screening Efforts on Potential Invasives

About 11 million marine ornamental fish of ca 1800 non-native species are imported into the USA each year. Selecting for risk assessment is daunting such a diverse pathway. Herein, we discuss focused method selection: choosing important taxa related to known invaders in high-volume pathways and narrowing prospective lists manageable groups potential hazards. We provide an example using damselfishes, family with high volume trade one established waters. used specialized literature review screening tool (Aquatic Species Invasiveness Screening Kit) estimate invasiveness waters Florida. The was identified as hazard invasive. All other scored well below threshold future climate had little effect on estimates invasiveness. analysis revealed need additional or prohibitions damselfishes trade. Education, monitoring, early detection rapid response were main management recommendations. selection process employed herein provided identification preliminary just species, but collectively, they represent 40% by fishes