Mottled Ctenopoma - Ctenopoma weeksii : Complete Fish Profile & Care Guide
Table of contents
Introduction
The Mottled Ctenopoma (Ctenopoma weeksii) exhibits characteristics of shyness, yet they are generally sociable and can thrive in a community tank when appropriate tank mates are selected.
While maintaining a pair of Mottled Ctenopomas is ideal, it is possible to house multiple males together, even though aggression and territorial behaviour may arise during spawning conditions. To mitigate potential conflicts, the aquarium should provide ample hiding places and utilize visual barriers to break lines of sight.
While a species-only setup may yield optimal results, the Mottled Ctenopoma can coexist with other compatible species. It is advisable to choose small, peaceful fish that occupy different areas of the tank, such as Tetras, Rasboras, killifish, and Hatchet fish. The presence of suitable tank mates can encourage the Mottled Ctenopomas to display more active behaviour, as they can be naturally reserved.
Caution should be exercised to avoid housing the Mottled Ctenopoma with tiny fish or fry, as they may become prey. Additionally, it is important to refrain from placing them with aggressive or boisterous species that could disrupt their well-being.
To create an optimal environment, the Mottled Ctenopoma thrives in a well-established aquarium with a dark substrate and ample hiding places comprised of plants, driftwood, and smooth rocks. The inclusion of floating plants can further enhance the habitat by diffusing light and providing a sense of security for these timid fish. Efficient filtration is essential, with gentle water movement and regular small, frequent partial water changes are recommended to maintain low nitrate levels.
While the Mottled Ctenopoma demonstrates adaptability to a range of water conditions, the most vibrant colouration is often displayed in soft, slightly acidic water. The addition of dried Indian Almond leaves or other types of leaf litter can contribute to a natural aesthetic and further enhance their well-being.
In terms of appearance, the Mottled Ctenopoma exhibits the ability to change colour rapidly when startled, often transitioning to a mottled pattern. Their primary body colour is yellowish-brown, featuring a large spot on both sides, and their fins showcase brown hues with distinct black edges.
Mottled Ctenopoma Photos
Sexual Dimorphism
Distinguishing between male and female Mottled Ctenopomas can prove to be a challenging task due to their striking similarity in appearance. Nonetheless, certain subtle differences can help in discerning the sexes. One notable characteristic is the shape of the fins. Male individuals typically exhibit dorsal and anal fins with a more angular appearance compared to their female counterparts. Additionally, in terms of size, females tend to be larger in comparison to males.
Quick Facts
| Scientific Name | Ctenopoma weeksii |
|---|---|
| Year Described | 1896 |
| Other Names | Mottled Bushfish |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Anabantiformes |
| Family | Anabantidae |
| Genus | Ctenopoma |
| Origins | Cameroon , Democratic Republic of the Congo |
| Max Size | 12 cm |
| Temperament | Peaceful |
| Aquarium Level | Bottom - Middle |
| Difficulty | Beginner - Intermediate |
| Shoaling | No |
| Best kept as | Pairs |
| Diet & Feeding | Carnivore |
| Reproduction | Egg Depositor |
| Average Lifespan | Up to 10 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 6.0 - 7.5 |
| GH | 4 - 15 |
| ℉ | 75 - 82 |
|---|---|
| ℃ | 23 - 27 |
Natural Habitat
Mottled Ctenopomas are native to the middle and Upper Congo River Basin in Cameroon, as well as the Democratic Republic of the Congo, located in Africa. This species thrives in aquatic environments characterized by sluggish to still water conditions, often exhibiting lower oxygen levels. Mottled Ctenopomas can be found in various habitats, such as pools, lakes, lagoons, and swamps. Their preference is typically towards areas with dense vegetation, as these provide essential cover and refuge from potential predators. By occupying these marginal zones, Mottled Ctenopomas maximize their chances of survival and successfully adapt to their natural surroundings.
Breeding
Breeding Mottled Ctenopomas (Ctenopoma ansorgii) can present some challenges; however, with proper care and conditions, successful breeding can be accomplished. Sexual maturity is typically reached by these fish when they reach the age of two years.
To initiate breeding, a separate breeding tank of approximately 50 litres in capacity is recommended. The water temperature should be maintained at around 75 degrees Fahrenheit, and the tank should be equipped with an abundance of floating plants. Spawning activity typically occurs during the evening hours.
Unlike some other species, Mottled Ctenopomas do not exhibit parental care or construct bubble nests. Instead, the quick breeding process takes place over the substrate, with the small eggs floating to the surface and eventually landing in the floating plants. However, it should be noted that the parents may consume the eggs, making it advisable to remove them at this stage.
Approximately 24 hours after being laid, the eggs will hatch, and the fry will become free-swimming within two to three days. At this early stage, the fry is quite small and requires nourishment in the form of infusoria for the first week. Subsequently, they can transition to accepting microworm and baby brine shrimp as part of their diet.
Diet & Feeding
Because the Mottled Ctenopoma is a carnivore, it would be best if you aimed to feed your fish on a diet primarily of meaty foodstuffs such as live and frozen daphnia, brine shrimp, lobster eggs, cyclops, Mysis shrimp and bloodworm. Bloodworm should be used sparingly as it is hard for your fish to digest. You can also cut up earthworms from your garden or chop up shop-bought mussels, prawns, krill and fresh fish (be sure only to use fresh or frozen fish and not fish canned in oil).
You can also try your fish with dried foods formulated for predatory fish made up of insect material such as Fluval bug bites, which you can also use to supplement the diet. However, dried foods are not usually accepted, although some individuals learn to take them. Get to know your fish and test which foods they prefer and which they ignore, but always be sure not to overfeed your fish and remove excessive uneaten food whenever possible.
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