Johnstoni

Johnstoni Hap

Placidochromis johnstoni

Johnstoni Hap is a Lake Malawi hap from sandy and muddy-bay habitats, with a larger adult size and a steady display presence. It works well in spacious Malawi hap aquariums with open substrate and compatible tank mates.

Origin and Habitat

• Native Region: Lake Malawi-wide distribution.
• Natural Habitat: Shallow muddy bays, sandy habitat, and intermediate habitat.

Physical Characteristics

• Size: 8-9 inches.
• Coloration: Mature males develop stronger adult display color; females and juveniles are more subdued.
• Body Shape: Larger, laterally compressed hap body suited for open swimming near sandy areas.

Behavior and Temperament

• Temperament: Mildly aggressive.
• Social Behavior: Best kept with similar-sized Lake Malawi haps and robust peacocks in a spacious aquarium.

Aquarium Care

• Tank Size: A 75 gallon aquarium or larger is recommended.
• Water Parameters: 74-84°F, pH 7.4-8.4, hard water.
• Tank Setup: Provide sand, open swimming space, and rockwork for structure. Maintain stable hard, alkaline water and strong filtration.

Diet and Feeding

• Primary Staple: Feed a quality daily diet such as Ron’s Peacock & Hap Adult Food.
• Juveniles: Growing fish can be fed Ron’s Juvenile Food.
• Fry: Newly released fry should be started on Ron’s Fry Food.
• Feeding Frequency: Feed 1–2 small meals daily and avoid overfeeding.

Breeding

• Breeding Type: Maternal mouthbrooder.
• Breeding Notes: Males court females and may defend breeding areas. Females hold eggs and fry in the mouth, and released fry should be protected from adults.

Tank Mates

• Compatible With: Similar-sized Lake Malawi haps and larger peacocks.
• Avoid: Small fish, delicate species, and very aggressive tank mates that may dominate the aquarium.