Mochokidae

Synodontis waterloti

The catfish Synodontis waterloti, also known as the Waterlot Synodontis, belongs to the family Mochokidae. It is relatively peaceful and does well alongside other non-aggressive species, but it will swallow any fish small enough to fit in its mouth, so very small tankmates are not kept with it. Its care itself is not particularly difficult.

Tank
from 80 L (21 gal), 100 L (26 gal) recommended
Temperature
23 – 25 °C (73 – 77 °F)
Size in aquarium
18 cm (7.1 in)
Acidity
pH 6.5–7.5

Dangerous to small fish

Natural rangeRange on the map
  • Côte d'Ivoire
  • Ghana
  • Guinea
  • Liberia
  • Senegal
  • Sierra Leone

Tank conditions

Plan the tank stocking
Temperature
23 – 25 °C (73 – 77 °F)
Water pH
Neutral (6.5) – Neutral (7.5)
Water dH
Soft (5) – Hard (15)
Water salinity
no salt (freshwater)
Size in aquarium
18 cm (7.1 in)
Lifespan
10 years
Temperament
Semi-peaceful dangerous to smaller ones
Toward small fish
a risk to small fish
Required aquarium volume
from 80 L (21 gal), 100 L (26 gal) recommended
Lighting
dimmed or moderate
Substrate
soft peat-based
Water flow
weak or moderate
Feeding
Sinking (any)
Keeping
Both solitary and in group flexible
  • Lifespan. A lifespan to expect under good care, not a measured value: it depends heavily on tank volume, water quality and diet — and for selectively bred forms, on their origin as well.
  • Toward small fish. Based on the Predators category in the catalog or the temperament in the species parameters. “A risk to small fish” means the species is not a predator by habit, yet will swallow any fish that fits in its mouth.
  • Required aquarium volume. This is a husbandry recommendation, not a measured value: the volume depends on the keeping mode (both solitary and in group (flexible)), footprint, decor and tank mates.

Care and keeping

Description

Adults can reach up to 18 cm in length. Distinguishing males from females by external characteristics is quite challenging, as sexual dimorphism is weakly expressed. Although females are perceived as slightly larger than males, determining sex based on this criterion in a mixed age group will not be easy. The body coloration is yellow with large brown spots. Notably, the pattern can vary depending on the fish's origin: instead of spots, irregularly shaped blotches are sometimes found.

Habitat

The natural habitat of this species covers the equatorial and subequatorial regions of Africa, including countries such as Guinea, Liberia, Guinea-Bissau, Sierra Leone, and Ghana. Here, Synodontis inhabits numerous river systems, often under the canopy of humid rainforests. These biotopes are characterized by silty bottom deposits, as well as an abundance of aquatic vegetation and various plant debris, such as snags, fallen leaves, and fruits.

Behavior and Compatibility

This species is considered territorial, capable of actively defending its bottom territory from other conspecifics. Nevertheless, their aggressiveness is quite weak, allowing a group of Synodontis to be kept together. Towards other fish, they are peaceful, provided the other fish are not too small; otherwise, smaller inhabitants may be accidentally eaten. This behavior should not be seen as hostility, but rather as indiscriminate feeding, characteristic of many catfishes.

Care and Maintenance

For keeping a single catfish, an aquarium of at least 100 L is required. This is quite sufficient for the comfortable existence of this relatively small and not overly active fish. When decorating the aquarium, it is recommended to use a soft substrate, such as fine sand, as well as snags and twisted roots, which will serve as shelters. Dense aquatic vegetation will help create a more natural environment. Lighting should be subdued, and floating plants can provide additional shading. Water quality and hydrochemical composition play a key role in the care of Synodontis waterloti. To maintain optimal conditions, a productive filtration system is necessary, as well as regular aquarium maintenance, including partial water changes and removal of organic waste.

Diet

Synodontis waterloti is not particularly demanding when it comes to feeding and readily consumes a variety of popular foods. It is important to offer sinking foods, as these catfishes feed in the bottom layer. It is also desirable that their diet includes vegetable supplements. An approximate diet may consist of dry foods such as flakes and pellets, combined with live or frozen products, as well as pieces of vegetables and fruits.

Breeding and Reproduction

The species is not bred in home aquaria. Commercial production of Synodontis fry relies on hormonal induction of the breeders — they do not spawn on their own in captivity. Adult females are recognised by their fuller bellies; sex is determined more precisely from the genital papilla, but such an examination takes skill and care because of the sharp dorsal and pectoral fin spines.

Diseases

The main cause of most diseases in these fish is unsuitable keeping conditions and poor-quality nutrition. If initial symptoms are observed, it is first necessary to check water parameters and the concentration of dangerous substances such as ammonia, nitrites, and nitrates. If the indicators deviate from the norm, they should be brought back into order, and only then should treatment begin.

How to choose

When purchasing, pay attention to the fish's overall activity and the condition of its skin. A healthy Synodontis waterloti should show curiosity, have no fin damage, ulcers, or white spots on its body. Avoid specimens with sunken bellies or unnaturally bloated abdomens, as this may indicate internal diseases. In the store, fish often hide in shelters, so it's worth asking the seller to gently disturb them to assess their mobility and reaction to external stimuli. It is advisable to acquire specimens that are already adapted to aquarium conditions and show a normal appetite when fed.

Compatibility

There are no pair reviews for this species yet — check tankmates in the matcher.

All tankmates

Plants and this fish

Matching water does not mean the plant will stay intact.

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Synodontis waterloti get?

An adult reaches 18 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Synodontis waterloti need?

The recommended volume is 100 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Synodontis waterloti need?

Temperature 23–25 °C, pH 6.5–7.5, hardness 5–15 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Synodontis waterloti live?

Around 10 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Synodontis waterloti aggressive?

Temperament: semi-peaceful (dangerous to smaller ones). Not a predatory species, but small fish that fit in its mouth will eventually be eaten.

How many Synodontis waterloti should be kept together?

Recommended setup: both solitary and in group (flexible). Ignoring this is a common cause of stress and disease.

What does Synodontis waterloti eat?

Diet type: sinking (any). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Synodontis waterloti?

The scientific name of the species is Synodontis waterloti, family Mochokidae.

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Other scientific names and conservation status

Categories
Catfish
Conservation status
Least concernLC