Conservation and Research
Conservation is not an optional extra.
It is what generation rely on.
Many museums are a sad monument to the failure of the human race,
to protect, guard and steward our natural resources.
Through Research we can learn and discover what is truly necessary,
to ensure not only the survival, but the thriving of our species.
Yellowfish are under huge pressure due to many factors,
like pollution. If fish die, due to pollution it is a screaming siren to warn us,
that our life sustaining water is killing us.
Help us to empower researchers and conservationists by giving information.
Small acts like picking up papers by the rivers are making a difference.
The impact of angling on smallmouth and largemouth yellowfish, labeobarbus aeneus and labeobarbus kimberleyensis, in Lake Gariep, South Africa
A large sportfishery that targets both smallmouth (Labeobarbusaeneus) and largemouth (Labeobarbus kimberleyensis ) yellowfish exists in South Africa. Both species have high conservation priority, and no assessments documenting the effect of angling on...read more
From Waterwheel Magazine The Water Wheel is a magazine aimed at improving general public understanding of science and technology. The Water Wheel has been in publication since 2002 with material being sourced from outside the WRC....read more
We have all asked ourselves - Do Yellowfish stay in one place, do they move around - how far do they move around upstream and downstream. Findings related to the above questions were recently published in a research paper entilted: "Habitat preferences and movement of...read more
http://yellowsonfly.blogspot.com/ The Yellowfishes of Southern Africa (Labeobarbus spp.) and the mudfishes will probably spawn when the river rises due to rain or because of artificial flow management that stimulates spawning through increased flow. These species...read more
The yellowfish behavioral study involves the use of biotelemetry methods to monitor the daily and seasonal behavior of yellowfish in the Vaal River Pic: Dirk Le Roux Research Conducted by: Gordon O'Brien The University of Johannesburg (Centre for Aquatic Research –...read more
The 2007 technical report comprises 11 chapters, with an introduction followed by nine species accounts and a final chapter on invasive alien Yellowfishes in South Africa. Ichthyologists and conservation officials who have a sound knowledge The report concludes with...read more
The Yellowfish Working Group has issued a pamphlet on sustainable Yellowfishing. I have created a printable poster that can be downloaded either as a pamphlet or to be framed by venues which can be downloaded Click here for the high resolution downloadable version....read more
Reproduction strategy of the smallscale yellowfish (labeobarbus polylepis) and breeding behaviour in the Blyde and Spekboom Rivers
Reproduction strategy of the Smallscale Yellowfish (labeobarbus polylepis) and breeding behaviour in the Blyde and Spekboom Rivers Author: Francois RouxOrganization: University of Johannesburg Abstract: The smallscale yellowfish (Labeobarbus polylepis, Cyprinidae), is...read more
Pic: Dirk Le Roux As recreational angling continues to grow in popularity, expanding to many developing countries, it is important that data appropriate for specific fish and fisheries are available. The species specific data needed includes information on the:...read more
Physiological response of Smallmouth Yellowfish to angling: Impact of angling duration, Fish size, Fish age, Sexual maturity, and temperature. Authors: Smit NJ; Gerber R; O’Brien G; Greenfield R; Howatson G Organizations: University of Johannesburg Pic: Dirk Le Roux...read more
Multidisciplinary investigation of differentiation and potential hybridisation between two yellowfish species labeobarbus kimberleyensis and l. Aeneus from the orange-vaal system
What is the extent of variation within and between L. aeneus and L. kimberleyensis based on morphology, allozymes and mtDNA? Is there any evidence to indicate hybridisation between the two Orange River yellowfishes? Are there differences between populations of the...read more
Largescale Yellowfish Labeobarbus marequensis Lowveld Largescale Yellowfish Shortsnout Chiselmouth Max length: 40.0 cm – 65cm Record Size: 5,75 kg Crocodile Riber 6,00 kg Pongholo River The largest recorded weighed 10 Kg. This was caught in 1980 by...read more
Largescale Yellowfish Labeobarbus marequensis Lowveld Largescale Yellowfish Shortsnout Chiselmouth Max length: 40.0 cm – 65cm Record Size: 5,75 kg Crocodile Riber 6,00 kg Pongholo River The largest recorded weighed 10 Kg. This was caught in 1980 by Casper Dercksen at...read more
Pound for pound the best fighting Yellowfish found in our rivers are also in my opinion the most skittish and hardest to catch – enter Labeobarbus marequensis or more commonly known as The Lowveld Large Scale Yellowfish. Long before the Vaal Smallmouth explosion and...read more
Characterisation of the social and economic value of the use and associated conservation of the yellowfishes in the vaal river
As a targeted angling species, the use and related conservation initiatives of the Yellowfish in the Vaal River, to facilitate this angling industry, have been poorly characterized and are infrequently considered in the establishment of management actions for this...read more
"Biology and ecology of the Orange-Vaal Largemouth and Smallmouth Yellowfish Yellowfishes in the Vaal River" O’Brien G; De Villiers P Centre for Aquatic Research, University of Johannesburg A new Water Research Commission report entitled "Biology and ecology of the...read more
Aspects of the biology of the bushveld Smallscale Yellowfish (Labeobarbus polylepis): feeding biology and metal bioaccumulation in five populations
Biology of the Smallscale Yellowfish: feeding biology and metal bio accumulation in five populations Author: Andrew Husted Organisation: University of Johannesburg Abstract: The general conservation status of freshwater ecosystems worldwide is poor and continues to...read more