
Photo thanks to Ddubtoille
Name:
Scientific name: Oreochromis mossambicus
Common name: Tilapea
AKA: Mozambique mouthbrooder, Mozambique tilapia, Blue Kurper, Oreochromis andersonii, Tilapia kafuensis, Kafue bream, Three spotted tilapia
Country of origin: Africa
pH:
Temperature: under 10c - over 38c
Hardness:
Water flow:
Oxygenation:
Maximum size: 40cm +, although they are capable of stunting their own growth under less than ideal conditions.
Diet: They are omnivorous - eating everything in their environment that hasn't been nailed down, including shrimp, fish, detritus, plants and algae.
Breeding: males - grow faster, have a concave head & enlarged lips.
It is often crossed with other tilapea species to increase the size of the fillets in aquaculture. As a pure species it makes up around 4% of the world's tilapea in aquaculture.
The colour of the fish can vary, depending on its environment & breeding. It can be a yellow or green, with horizontal dark stripes.
The male makes a hollow in the substrate, the female lays her eggs & they are fertilised, then the female carries the eggs in her mouth. 1 male can pair with many females.
Lifespan: up to 11 years
Tank companions: It is far too large a fish to house shrimp with, and could easily eat an adult shrimp in one bite. It is extremely aggressive, and should not be kept with any other fish.
Overseas it is used in aquaponic systems, and is frequently eaten. Each fish can weigh up to 2kg each.
It will tolerate brackish water as well as fresh.
Confused with:
Native perch or grunters:
http://www.aquariumlife.com.au/showt...tional-Park-NT
They IS NOT on the allowable import list as of 27/08/2013:
http://www.aquariumlife.com.au/showt...ght=blue+acara
http://www.environment.gov.au/biodiv...mport-list.pdf
It has not been on the allowable import list since 1960.
It has been introduced in countries other than its native territory, where it is decimating fish stocks and local habitats, to the extent that the native stock are now threatened.
Oreochromis mossambicus are NOT legal imports to Australia as of 20/10/2013:
http://www.environment.gov.au/biodiv...mport-list.pdf
however they may have been on previous import lists, have entered Australia prior to the implementation of import lists, or been misidentified on importation.
The IUCN Red List reports Oreochromis mossambicus as a species which is near threatened, with an unknown population trend at 20/10/2013:
http://www.iucnredlist.org/search
It is very important not to release any aquarium specimens into our waterways. Any that are not sold or re-homed/ given away, can often be re-sold to aquarium stores. If they are homed in ponds, care should be taken that they cannot escape in run-off into our waterways. Even if fish are native & local they should not be moved from one waterway to another, as this can transfer disease. If they are not local fish, they can both spread disease and either out-compete or eat local fish, shrimp & plants, causing their demise.
They are NOT a good fish for aquarium keepers in Australia - people have been prosecuted for trading them.
Relevant threads:
People prosecuted in QLD for trading:
http://www.aquariumlife.com.au/showt...nd-fish-stocks
Illegally introduced species discussion:
http://www.aquariumlife.com.au/showt...hlight=Tilapia
http://www.aquariumlife.com.au/showt...hlight=Tilapia
Pics:
http://www.aquariumlife.com.au/showt...hlight=Tilapia
Food source:
http://www.aquariumlife.com.au/showt...hlight=Tilapia
Threat to native shrimp:
http://www.aquariumlife.com.au/showt...hlight=Tilapia
Pest species:
http://www.feral.org.au/wp-content/u...TILFS3_web.pdf
They have asked around and haven't figured out what they are anyone know what they are? Also they said around the top of the dorsal fin and edge of the tail it gets red especially at night.