biology

Synodontis multipunctatus

Synodontis multipunctatus is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Synodontis multipunctatus rather than just read about it. In short: Synodontis multipunctatus, also known as the cuckoo catfish, cuckoo squeaker, or multipunk, is a small catfish from Lake Tanganyika, one of the lakes in the Great Rift Valley system in Africa. It is a brood parasite upon mouthbrooding cichlids, the only known example among fishes.

Key takeaways

Synodontis multipunctatus belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Synodontis multipunctatus to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Synodontis multipunctatus from memory before moving on to harder problems.

Reference excerpt

Synodontis multipunctatus, also known as the cuckoo catfish, cuckoo squeaker, or multipunk, is a small catfish from Lake Tanganyika, one of the lakes in the Great Rift Valley system in Africa. It is a brood parasite upon mouthbrooding cichlids, the only known example among fishes. This species is a minor component of local commercial fisheries.

Description

Synodontis multipunctatus is one of a number of species of upside-down catfish in Lake Tanganyika, which is more famous for its cichlids. It grows to a length of 27.5 centimetres (10.8 in) TL, and gathers in large schools at depths of about 40 metres (130 ft) in the lake. This species has a generalist diet, and it is closely related to another deepwater species, the piscivorous S. granulosus.

Reproduction S. multipunctatus is notable for its breeding behaviour - it is a brood parasite, similar to cuckoo birds from which it takes its common name. Lake Tanganyika is home to a number of mouthbrooding cichlids, which care for their eggs and young by carrying them in their mouth. S. multipunctatus uses these, particularly Ctenochromis horei and Simochromis babaulti, as unwitting caretakers for their children. A number of adaptations facilitate this behavior, such as large eggs which resemble their hosts' own, small clutches but frequent egg production, and rapid development compared to other Synodontis and cichlids. The smell of spawning cichlids excites S. multipunctatus, and as the catfish approach the cichlids try to collect their own eggs, as Synodontis species often feed on fish eggs. The catfish release and fertilise their own eggs within the mass of cichlid eggs before the female cichlid finish collecting them; in doing so, the cichlid will collect both its own eggs and those of S. multipunctatus. These eggs will then hatch within the cichlid's mouth, and proceed to eat the cichlid eggs and embryos with their well-developed teeth and jaws. This reproduction method removes the burden of parental care from the S. multipunctatus.

In the aquarium Synodontis multipunctatus are a popular addition to cichlid aquariums. They grow to about 15 centimetres (5.9 in), and can be bred in captivity provided suitable hosts are present. Some aquarists have had success with host cichlids from Lake Malawi and Lake Victoria as well as those from Lake Tanganyika. They can be very aggressive and territorial towards other Synodontis species, they should be kept in groups over 3 to avoid competition between two, and proper cover and cave-like structures should be provided. They seem to be active in the day as much as the night and can prove quite lively. If kept in larger groups territorial issues are less likely.

See also List of freshwater aquarium fish species Synodontis multipunctatus was featured in the "Interesting Fauna" section of Episode 292 of the 'Geologic Podcast' by George Hrab.

References

Further reading Tanganyika cichlids in their natural habitat, Ad Konigs, Cichlid Press, 1998 Lake Tanganyika cichlids: A complete pet owners manual, Mark P. Smith, Barron's Educational Services, 1998 Schraml, Erwin (August 2003). "Fiederbartwelse aus dem Tanganjikasee" [Feather catfish from Lake Tanganyika]. DATZ (in German). 8: 60–7. ISSN 1616-3222. Blažek, Radim; Polačik, Matej; Smith, Carl; Honza, Marcel; Meyer, Axel; Reichard, Martin (2018). "Success of cuckoo catfish brood parasitism reflects coevolutionary history and individual experience of their cichlid hosts". Science Advances. 4 (5) eaar4380. Bibcode:2018SciA....4.4380B. doi:10.1126/sciadv.aar4380. PMC 5931752. PMID 29732407. "Brood parasitism in fish". ScienceDaily (Press release). May 9, 2018.

External links Data related to Synodontis multipunctatus at Wikispecies

Illustrations

Worked examples

Example 1 — a first encounter with Synodontis multipunctatus

Start with the simplest possible case. Write down what Synodontis multipunctatus claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Synodontis multipunctatus before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Synodontis multipunctatus ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Synodontis multipunctatus

In research: Synodontis multipunctatus appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Synodontis multipunctatus in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Synodontis multipunctatus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Brood parasites, Fish described in 1898, Fish of Burundi, so understanding it makes those chapters shorter.
In everyday life: Look for Synodontis multipunctatus outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Synodontis multipunctatus in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Synodontis multipunctatus means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Synodontis multipunctatus out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Synodontis multipunctatus in simple terms?

Why does Synodontis multipunctatus matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Synodontis multipunctatus?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Synodontis multipunctatus.