Wallaciia notophthalmus Care Guide: Dwarf Pike Cichlid

Wallaciia notophthalmus gives you the long body, watchful eyes, and attitude of a pike cichlid in a fish that stays small enough for a reasonably sized aquarium. The females have beautiful eyespots in the dorsal fin, while mature males develop extended rays at the front of theirs. Both are worth a close look. Just give some thought to the setup, because a small pike cichlid still needs room to claim a territory.

 Care at a Glance

Care detail	Recommendation
Scientific name	Wallaciia notophthalmus
Former scientific name	Crenicichla notophthalmus
Adult size	Roughly 3–4 inches; females generally smaller
Tank size	A 40-gallon breeder is a practical starting point for a compatible pair
Temperature	77–82°F for routine care
pH	Aim for approximately 5.5–6.5
General hardness	Soft water preferred; approximately 35–90 ppm GH is a reasonable target
Temperament	Territorial, especially with other dwarf cichlids and its own species
Recommended number	One fish or a compatible pair
Diet	Small live and frozen animal foods; prepared foods if accepted
Breeding	Cave spawner with parental care
Experience level	Best for fishkeepers comfortable managing soft water and cichlid aggression

These are practical starting targets, not experimentally established limits. Check the water your fish have been kept in and make changes gradually. Breeding may require softer, more acidic conditions than routine maintenance.

Where They Come From

Wallaciia notophthalmus is associated with the lower Rio Negro basin in Brazil, near Manaus. This is an Amazonian blackwater fish, so warm, soft, acidic water is the sensible starting point when planning its aquarium.

Driftwood, shaded areas, and sheltered spaces fit that background well. You can create an attractive setup with sand, branching wood, and a few caves without filling every inch with decorations.

Keep some open space so the fish can move between those sheltered areas.

Why the Scientific Name Changed

If you’ve been keeping fish for a while, you probably know this species as Crenicichla notophthalmus. It moved into Wallaciia as part of the 2023 revision of pike cichlid classification.

The older name still appears in store listings, books, and breeding accounts. Searching both names is useful when looking for information or availability.

Female

Telling Males and Females Apart

Mature females have one or sometimes two conspicuous eyespots in the dorsal fin, often with a reddish border. Mature males generally lack those dorsal eyespots and develop noticeably extended rays at the front of the dorsal fin.

The location matters here. We’re talking about markings in the dorsal fin, not a spot near the tail.

Those extended front rays are also helpful when separating male W. notophthalmus from the similar W. regani. Misidentification happens in the trade, especially with young fish that haven’t developed their adult features.

Male

Setting Up the Aquarium

For a compatible pair, I’d start with a 40-gallon breeder. The floor space gives you room to arrange several shelters and keep the fish from seeing each other constantly.

Use wood, caves, and plants to divide the aquarium into smaller areas. A fish retreating from its partner needs somewhere it can actually disappear from view. One cave in an otherwise open tank doesn’t provide much of an escape.

Sand makes a good substrate. Floating plants can soften the lighting, and plants attached to wood are useful if you want greenery without taking up much bottom space.

Keep filtration dependable and maintain good oxygenation, but provide sheltered areas away from strong flow.

Water Quality and Maintenance

Start with a mature aquarium and keep up with regular water changes. Match replacement water reasonably closely to the tank, especially when maintaining very soft conditions.

Leaves and driftwood can add tannins, but brown water doesn’t automatically mean soft water. If your tap water has substantial hardness and alkalinity, adding leaves won’t reliably turn it into Rio Negro water.

Test what you’re working with before buying the fish. If maintaining suitable water would be a constant struggle, that’s worth knowing ahead of time.

Feeding Wallaciia notophthalmus

These are small predators. Offer appropriately sized animal foods such as frozen brine shrimp, mysis, daphnia, and bloodworms, with variety across the week.

New arrivals may show little interest in dry food. Have suitable live or frozen options available rather than assuming they’ll immediately take the same pellets as the rest of the aquarium.

Some individuals can learn to accept prepared foods. Introduce those gradually while making sure the fish continue eating well.

Small fish, fry, and ornamental shrimp may be treated as food. Their adult size is modest, but their mouths are still built for grabbing prey.

Temperament and Tank Mates

The biggest issue is often their relationship with other cichlids, including each other. Buying a male and female doesn’t guarantee a compatible pair.

Watch for persistent chasing, a fish pinned behind equipment, damaged fins, or one partner being prevented from feeding. Have a divider or another suitable aquarium available if the relationship turns sour.

For tank mates, look for peaceful fish that share their water requirements and are too large to swallow. Fish using the middle and upper levels generally create fewer territorial conflicts than another dwarf cichlid competing for the same caves.

A pair-focused aquarium is my preference if breeding is the goal. It makes feeding, observation, and managing aggression much easier.

Breeding Dwarf Pike Cichlids

Wallaciia notophthalmus lays its eggs in a sheltered cavity. The female tends the eggs while the male helps defend the surrounding territory.

Provide several caves or narrow shelters so the pair has a choice. Soft, acidic water, steady maintenance, and a varied diet are sensible foundations, but getting a pair to spawn can still take patience.

Once eggs or fry are present, expect the defended territory to become more important to the parents. Tank mates that were tolerated previously may suddenly be chased.

Have newly hatched baby brine shrimp ready for free-swimming fry. Feed small portions and keep the nursery clean without making abrupt changes to its water conditions.

Is This Fish Right for You?

If you enjoy dwarf cichlids and want something a little different, W. notophthalmus has plenty to offer. The male’s fins, the female’s markings, and their watchful behavior make them interesting fish even when they aren’t breeding.

I’d plan the aquarium around them, particularly if keeping a pair. Give them suitable water, several retreats, and enough attention to catch compatibility problems early.

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