Celebrating World Fish Migration Day

JP le Roux, Aquatic Conservationist, Source to Sea Programme

jeanpierrel@ewt.org.za

World Fish Migration Day (WFMD) is a one-day global celebration to create awareness around the importance of open rivers and migratory fish and in 2018 it was celebrated on 21 April, with the theme of Connecting fish, rivers and people.

may16

This day is significant because many fish need to migrate to reproduce, feed and complete their life cycles. Migratory fish make up a crucial link in the food chain and play an important role in healthy and productive river systems. They are also an important source of food and livelihoods for many people. Unfortunately, many migratory fish species face threats such as dams, weirs and sluices, which disrupt the natural flow of rivers and prevent their migration.

may14

The EWT’s Source to Sea Programme took part in a special event in Groot Marico to mark this day, organised by Iggdrasil Scientific Services. The event was focused on barriers to fish migration, both natural and manmade. They travelled around Marico looking at barriers that limit the movement of the endemic Marico Barb as well as the impact of Largemouth Bass on indigenous fish communities. They found that in some cases the barriers limit the dispersal of invasive fish, which in turn limits their effect on the endemic fish population. One of the biggest threats to the Marico Barb was identified as the introduction of invasive fish in the upper part of the catchment, which will need an education and outreach programme to be mitigated.

may15

Thanks to Elizabeth Wakeman Henderson Charitable Foundation for their support of this work.

Advertisements
This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s