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German wasp | Vespula germanica

German wasp

Vespula germanica

Coral bush | Ardisia crenata

Coral bush

Ardisia crenata

Purple loosestrife | Lythrum salicaria

Purple loosestrife

Lythrum salicaria

Pom pom weed | Campuloclinium macrocephalum

Pom pom weed

Campuloclinium macrocephalum

Canarybird bush | Crotalaria agatiflora

Canarybird bush

Crotalaria agatiflora

Peanut butter cassia | Senna didymobotrya

Peanut butter cassia

Senna didymobotrya

Rubber vine | Cryptostegia grandiflora

Rubber vine

Cryptostegia grandiflora

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Environmental Programmes

In order to tackle our country’s socio-economic challenges, the government adopted the Outcomes based approach to improve government performance and providing focus on service delivery. find out more

Bluegill sunfish

Lepomis macrochirus

Common name:

Bluegill sunfish

Scientific name:

Lepomis macrochirus

:

The bluegill sunfish reaches up to 35cm in length and 1kg in weight, with a compressed ovoid body shape. Body colouration iridescent greeny-blue with vague vertical bands along the body. Jaw and gills blue, breeding males develop an orange chest. Large eyes with a small upturned mouth. Native to eastern and central North America. Preys on insects, small invertebrates as well as small fish and frogs.

Additional Info

  • Where does this species come from?

    United States of America.

    What is its invasive status in South Africa?

    NEMBA – Category 1b

    Where in South Africa is it a problem?

    Western and Eastern Cape, KwaZulu-Natal, Free State, Mpumalanga and Gauteng

    How does it spread?

    Through interlinked water systems and deliberate human introduction.

    Why is it a problem?

    Dominates the fish fauna in areas where it has been introduced. Has the tendency to overpopulate, resulting in stunted populations dominated by smaller fish. Results in considerable pressure exerted in invertebrates and on juveniles of indigenous fishes.

    What does it look like?

    Description: Up to 35cm and 1kg, with compressed ovoid body shape. Body colouration iridescent greeny-blue with vague vertical bands along the body. Jaw and gills blue, breeding males develop an orange chest. Large eyes with a small upturned mouth. Habitat: Freshwater species, inhabiting slow-flowing or still waters such as dams and lakes. Breeding: Territorial when breeding. Males construct a nest and guards eggs and larvae.

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General News Updates

2019 National Symposium on Biological Invasio…

26-02-2019

This is your invitation to South Africa's 2019 National Symposium on Biological Invasions. The convention is hosted by the Centre for Invasion Biology (CIB), University of Stellenbosch, and the Biolo... Read more

2019 Invasive Species Training

22-01-2019

During the past five years (2014-2018), ISSA invasive species trainers have trained 4 000 in the identification of invasive species and laws pertaining to invasive species across South Africa.  ... Read more

Alien Grass Working Group

04-09-2018

Who are we? The South African National Alien Grass Working Group was jointly initiated by the South African Biodiversity Institute (SANBI) and the Centre for Excellence in Invasion Biology (C·I·B) in... Read more

Permits for planting indigenous Cynodon?

01-03-2018

On 16 February, 2018, South Africa's Department of Environmental Affairs issued amendments to the regulations and lists relating to the National List of Invasive Species.  Updates to the draft&n... Read more

Invasive species training 2018 dates released

28-02-2018

Interested in invasive species?  How much do you know about NEMBA invasive species compliance for landowners and organs of state? The South African Green Industries Council (SAGIC) have released... Read more

Communications post for Africa advertised

25-01-2018

The Nature Conservancy has advertised a brand new post:  Communications Manager, Africa Region. Knowledge of invasive species and water would be an asset in this post. See details below:    Job Titl... Read more