Potential spread of invasive crayfish used as life bait by Indonesian anglers

Fishing is part of human culture since ancient times to catch fish. The use of live bait by anglers is an important factor in the spread of invasive aquatic species. To analyze the habits of Indonesian anglers in using freshwater crayfish as live bait, an anonymous online questionnaire was spread via social media in Indonesia. The questionnaire included a series of closed and open-ended questions that investigated various socio-psychological parameters and types of bait used by Indonesian anglers. Redclaw crayfish Cherax quadricarinatus, which is non-indigenous in most of the Indonesian territory, was found to be used by 13% of anglers for this purpose there. These findings illustrate the need for focused management activities. Any potentially invasive non-native species imported into Indonesia, as well as those that are accidentally or deliberately released into the waters, should be regulated, so as not to cause environmental damage.

Automated summary

Fishing has been a part of human culture for a long time, but the use of live bait by anglers can contribute to the spread of invasive aquatic species. A survey conducted in Indonesia revealed that 13% of anglers use non-native redclaw crayfish as live bait, highlighting the need for focused management activities. Regulations should be put in place to control the importation and release of potentially invasive non-native species in order to prevent environmental damage.