Heading. Basin Fish.Heading. P-Z of Native Fish.
 

Image. Southern Purple-spotted Gudgeon. Mogurnda adspersa.
Link. About the Name.

 
Name. Southern Purple-spotted Gudgeon.
Scientific Name. Mogurnda adspersa.
 

How Big?
 
Found Where?
How Many?   Lives Where?
Eats What?   Reproduces How?
Moves Where?   Eaten By People?
Main Threats?   Are We Helping?

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Heading. How Big Does it Grow?
.
Southern Purple-spotted Gudgeon usually grow to about 7 cm in length but they have been known to reach 12 cm.

 Heading. Where is it Found?
Southern Purple-spotted Gudgeon were once found everywhere throughout the Murray, Murrumbidgee and Darling Rivers. Now they are only found in a few places in New South Wales and Southern Queensland.
 
Image. Southern Purple-spotted Gudgeon Distribution Map.

 Heading. How Many Are There?
IN THE PAST
Southern Purple-spotted Gudgeon were probably quite common.
TODAY
Southern Purple-spotted Gudgeon are rarely caught in large numbers and are thought to be extinct in Victoria and South Australia, although there has been restocking at Murray Bridge in South Australia. It is classified as 'endangered'.

 Heading. What Habitats Does it Use?
.
Heading. Large-Scale Habitats.
Image. Habitat - Slopes and Tablelands. Image. Habitat - Lakes and Dams.
SLOPES AND TABLELANDS LAKES AND DAMS
Southern Purple-spotted Gudgeon live in creeks and rivers on slopes and tablelands and in lakes and dams and wetlands on the plains.
 
Heading. Small-Scale Habitats.
Image. Habitat - Slow Moving Waters. Image. Habitat - Aquatic Plant Beds.
SLOW MOVING WATERS AQUATIC PLANT BEDS
Image. Habitat - Snags and Rocks.
SNAGS AND ROCKS
Southern Purple-spotted Gudgeon like to live on the bottom in slow-moving water where there is a good cover of aquatic plants.

 Heading. How Does it Mate and Reproduce?
MATING
The male Southern Purple-spotted Gudgeon swims around the female with his fins stretched out and his gill covers open. Courting may last for days. Males can reproduce when they are about 4.5 cm in length and females at 4.9 cm.
SPAWNING
Southern Purple-spotted Gudgeon spawn from December - February when water temperatures are from 19-34°C and water levels rise. The female lays 30-1300 eggs before leaving the male to fan and guard them. Females can spawn more than once in a season.
EGGS
Sticky Southern Purple-spotted Gudgeon eggs are deposited on stones, aquatic plants or logs. They are transparent, 2-3.8 mm in length, long and thin, and pointed at both ends.
JUVENILES
The young Southern Purple-spotted Gudgeon hatch in 3-8 days at 20-29°C. Newly-hatched fish are about 4 mm long, and have a yolk sac that provides them with food for the first 6 days.
 Heading. What Does It Eat?
Adult Southern Purple-spotted Gudgeon feed on worms, mosquitofish, and dragonfly, midge and mosquito larvae.
Image. Southern Purple-spotted Gudgeon What Does It Eat?
 
Heading. Where Does it Move?
Southern Purple-spotted Gudgeon do not swim in schools or move to a new place to spawn. They usually 'sit and wait' for something to come along for them to eat, lying still on the bottom and then lunging out to ambush it.

 Heading. Do People Eat Them?
Heading. Fisheries.
Heading. Commercial.
IN THE PAST
No commercial fishery.
TODAY
No commercial fishery, although some fish are collected for aquariums.
Heading. Recreational.
IN THE PAST
Before the 1940s, Southern Purple-spotted Gudgeon were used as live bait to catch Murray Cod.
TODAY
A few Southern Purple-spotted Gudgeon are collected for aquariums.
Heading. Fishing.
LEGAL SIZES
There are no size limits on Southern Purple-spotted Gudgeon that can be caught. This applies to all States of Australia.
CATCH LIMITS
There are no limits on the number of Southern Purple-spotted Gudgeon that can be caught each day. This applies to all States of Australia.
CLOSED SEASONS
Southern Purple-spotted Gudgeon can be caught all year round in all States of Australia.
BAIT
Southern Purple-spotted Gudgeon are caught using small seine nets and dip nets.

 Heading. What Are the Main Threats to This Fish?
Image. Threats - Fish Habitats.
FISH HABITATS
Southern Purple-spotted Gudgeon may have to compete with mosquitofish for habitat.
Image. Threats - Alien Species.
ALIEN SPECIES
Redfin are known to eat Southern Purple-spotted Gudgeon.

 Heading. How Are We Helping?
Southern Purple-spotted Gudgeon are not bred for restocking wild habitats but are a popular fish for aquariums due to their bright colour patterns.
RECOVERY PLANS
A National Recovery Plan has been developed for the Southern Purple-spotted Gudgeon.
Actions will include:
- Discovering if the Southern Purple-
  spotted Gudgeon found in some
  coastal areas are the same species as
  those further inland.
- Discovering the things about the river
  that are important to the Southern
  Purple-spotted Gudgeon.
- Discovering how alien species of fish
  affect the Southern Purple-spotted
  Gudgeon.
- Restocking suitable habitats with
  Southern Purple-spotted Gudgeon.
- Conducting research into breeding
  Southern Purple-spotted Gudgeon in
  captivity.

Page Last Updated: 10 Aug 2006 16:49