Mogurnda Adspersa

Datasheet

General Description

The Southern Purple Spotted Gudgeon, scientifically known as Mogurnda Adspersa, is an endangered species found mainly in Australia. This gudgeon species is distinctly marked by 30-36 scales along its lateral line and a pronounced red spotting on the second dorsal fin, setting it apart from its closely related Northern cousin, Mogurnda mogurnda. It can grow up to 14.0cm in length and is becoming more accessible in the aquarium trade due to commercial breeding efforts.

Aquarium Setup

When setting up an aquarium for the Southern Purple Spotted Gudgeon, it is crucial to provide plenty of hiding spots for this timid species. A substrate of sand, coupled with rocks and bogwood for shelter, is ideal. While they appreciate plants, adding salt to the water is unnecessary. Dim lighting encourages their activity, and keeping water movement minimal is key as they dislike strong currents. Due to their jumping tendency, ensuring a securely covered tank is important (see table).

Behaviour

Although territorial, the Southern Purple Spotted Gudgeon is not overly aggressive. It does have a predilection for consuming tankmates that are small enough to fit in its mouth, making it essential to choose companions wisely. This gudgeon peacefully coexists with rainbowfish, Corydoras catfish, and other robust yet peaceful species, allowing for group housing in adequately sized tanks.

Feeding and Diet

As a highly adaptable eater, this gudgeon readily accepts various foods. To maintain optimal health and vibrant coloration, a diet consisting of a mix of live and frozen foods is recommended. Providing a diverse and nutritious diet ensures the Southern Purple Spotted Gudgeon remains healthy and visually striking.

Reproduction & Dimorphism

For successful breeding, creating a species-specific tank is advisable. Acquiring a group of juveniles and allowing natural pairing to occur after conditioning them with a varied diet often leads to successful breeding. During spawning, males exhibit increased coloration, attracting females to lay 20-40 eggs. Post-spawning, males diligently tend to the brood, fanning the eggs and safeguarding them until hatching. Males and females exhibit distinct characteristics, with males showcasing brighter colors, pointed genital papilla, and sometimes a nuchal hump during spawning, whereas females possess a wider ovipositor.

Habitat and Distribution

Southern Purple Spotted Gudgeons inhabit slow-moving, weedy areas of rivers, creeks, and ponds predominantly in Australia. Their natural habitat comprises areas with ample vegetation and relatively calm waters, reflecting their preference for sheltered environments. These gudgeons are well-suited to thriving in similar conditions within a home aquarium, provided their habitat requirements are met.