Even-Spotted squeaker
Synodontis petricola
Also known as Even-spotted synodontis
FreshwaterFish
Care at a glance
- Temperature
- 75–82°F
- 24–28°C
- pH
- 7.5–8.5
- Adult size
- 4.7 in
- 12 cm
- Minimum tank
- 21 gal
- 80 L
- Temperament
- Peaceful
- Social behavior
- Shoaling
- Swim level
- Bottom
- Diet
- Omnivore
- Difficulty
- Medium
- Breeding
- Egg scatterer · Hard
- Rarity
- Rare
- Family
- Mochokidae
- Origin
- Lake Tanganyika
Overview
The Even-Spotted squeaker is a small, peaceful catfish from Lake Tanganyika, at home in a rocky, hard-water tank. It asks a little more of its keeper than the easiest fish do.
Did you know
The Even-Spotted squeaker is often confused with the cuckoo catfish and can use the same trick. It is a part-time brood parasite that can slip its eggs into a mouthbrooding cichlid's clutch.
Caring for the Even-Spotted squeaker
Give a group of Even-Spotted squeakers at least 21 gal (80 L). Build the tank from stacked rocks forming caves and crevices over sand, with clear swimming space. Strong filtration and good oxygen hold conditions steady.
Keep the water hard and alkaline with a high mineral content, at a pH of 7.5 to 8.5. A temperature of 75 to 82°F (24 to 28°C) suits it. Feed a mixed diet of sinking pellets, frozen bloodworms and algae-based foods, which it takes readily.
Keep Even-Spotted squeakers in a group of four or more. A group schools and forages actively over rock and sand, by day as well as at night. They are peaceful, and their modest size and calm nature make them good companions for Tanganyikan and other hard-water cichlids.
Breeding is possible but hard. It spawns by scattering eggs, which makes it easier to raise than the cuckoo catfish. Keepers often spawn it in a separate tank with the flowerpot method.
Good to know
The Even-Spotted squeaker is a dwarf squeaker in the family Mochokidae and one of the smaller members of its genus. It has the group's bony head shield and lockable spines, with neat dark spots on a pale body.
In the wild
The Even-Spotted squeaker is endemic to Lake Tanganyika. Its name, petricola, refers to its life among the rocks of the shoreline. The lake water is hard, alkaline and very stable.
Weekly picks
Tank mates
The Even-Spotted squeaker is a peaceful, shoaling species that keeps to the bottom. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Multie shell dweller
Neolamprologus multifasciatus
Freshwater1.8 in (4.5 cm) · 20 gal (75 L)75–81°F (24–27°C)
Black calvus
Altolamprologus calvus
Freshwater5.1 in (13 cm) · 53 gal (200 L)75–81°F (24–27°C)
Tanganyika killifish
Lamprichthys tanganicanus
Freshwater5.5 in (14 cm) · 40 gal (150 L)73–77°F (23–25°C)
Common questions
What size tank does an Even-Spotted squeaker need?
An Even-Spotted squeaker needs at least 21 gal (80 L). It spends most of its time in the bottom.
What temperature and pH does an Even-Spotted squeaker need?
An Even-Spotted squeaker is comfortable at 75–82°F (24–28°C) with a pH of 7.5–8.5.
What does an Even-Spotted squeaker eat?
An Even-Spotted squeaker eats sinking pellets, frozen bloodworms and algae-based foods. It takes all of them readily.
How big does an Even-Spotted squeaker get?
An adult Even-Spotted squeaker reaches about 4.7 in (12 cm).
Does an Even-Spotted squeaker need a group?
Yes. An Even-Spotted squeaker is a shoaling species and should be kept in a group, not singly.
How does an Even-Spotted squeaker breed?
The Even-Spotted squeaker breeds by scattering its eggs. Spawning it is hard, and keepers often use a separate tank and the flowerpot method.
Related species
3.9 in (10 cm)30 gal (114 L)72–79°F (22–26°C)Bugeye squeaker
Synodontis contractus
3.9 in (10 cm) · 30 gal (114 L)
3.9 in (10 cm)30 gal (114 L)73–81°F (23–27°C)Dwarf petricola
Synodontis lucipinnis
3.9 in (10 cm) · 30 gal (114 L)
3.9 in (10 cm)30 gal (115 L)75–82°F (24–28°C)Upside-down catfish
Synodontis nigriventris
3.9 in (10 cm) · 30 gal (115 L)
7.1 in (18 cm)29 gal (110 L)75–82°F (24–28°C)Cuckoo squeaker
Synodontis multipunctatus
7.1 in (18 cm) · 29 gal (110 L)
7.1 in (18 cm)21 gal (80 L)75–81°F (24–27°C)Pyjama synodontis
Synodontis flavitaeniatus
7.1 in (18 cm) · 21 gal (80 L)
4.9 in (12.5 cm)53 gal (200 L)73–81°F (23–27°C)Serpentis squeaker
Synodontis serpentis
4.9 in (12.5 cm) · 53 gal (200 L)
