[1] First described by Carl Linnaeus in 1758, A. grunniens is largely found in coastal waters and estuarine areas, especially over muddy bottoms.

Their bodies are covered in patches of varying shades of brown and weed-like projections protrude from their faces.

[3] Allenbatrachus grunniens has a terminal mouth position with an oral cavity lined with canine type teeth.

Allenbatrachus grunniens produces a "boat whistle" mating call 10-12 times a minute for hours on end to attract females to its nest.

A. grunniens is not particularly aggressive and can be kept with other aquarium fish; however, it may struggle to compete with more voracious tank mates for food.