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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

Spotted bass

Micropterus punctulatus

Common name:

Spotted bass

Scientific name:

Micropterus punctulatus

Alternative common names:

Spotty, spots, Kentucky spotted bass, spotted black bass.

The spotted bass has been introduced to southern Africa where it has become established in some isolated waters. Similar to the largemouth and the smallmouth bass, it is called the 'in-between' species. It is distinguished from the smallmouth bass by the dark, blotchy lateral band from head to tail. It tends to be found in areas with more current than largemouth bass like, and usually inhabits areas that are too warm, turbid and sluggish for smallmouth bass.

Additional Info

  • Where does this species come from?

    North America.

    What is its invasive status in South Africa?

    NEMBA Category 1b.

    Where in South Africa is it a problem?

    Midmar Dam area in KwaZulu-Natal.

    How does it spread?

    Intentional stocking for sport fishing.

    Why is it a problem?

    Spotted bass feed on indigenous species including insects, larger crustaceans, minnows, frogs, worms, grubs and small fish.

    What does it look like?

    Description: The spotted bass has a moderately compressed, elongated body, with similar colouration and markings to the largemouth bass. Habitat: Found in warm, slow-moving streams and stream-like areas or riverine arms of reservoirs. Breeding: Females may lay between 1 150-47 000 eggs. They spawn in late spring; eggs hatch after about five days at 14-16 degrees Celsius. Males guard the eggs during incubation and for up to four weeks after they have hatched.

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General News Updates

2019 National Symposium on Biological Invasio…


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


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


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?


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


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


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