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Here are the answers to the various quiz scattered throughout this website (including the old quizzes that have been removed by new ones, for your information and pleasure).

Quizzes are separated by a large blank space: you can then look at them individually… or if you are curious and not patient, in a row!

If you succeed to all, you are a most knowledgeable expert!

Quiz28 :

Surprisingly, the most frequently used root (with more than 3 letters) for Killifish names is "mann" which means Man in German. Is it for 7, 9, 11, or 14 taxa ?

14 taxa (including synonyms) : Aphyolebias wischmanni, Aphyosemion heinemanni, Aphyosemion hofmanni, Aphyosemion tessmanni, Epiplatys neumanni, Epiplatys chaperi spillmanni, Leptolucania mannii, Nothobranchius neumanni, Pantanodon stuhlmanni, Poropanchax manni, Pterolebias bokermanni, Rivulus kuelpmanni, Rivulus wassmanni, Simpsonichthys bokermanni. Back

Quiz27 :

Which city of the world holds the largest number of species with their type locality there ?

New York ! Surprising, but not too much. Many of them are synonyms because US immigrants did collect there without knowing previous collections. The list is long with 12 names : Fundulus heteroclitus macrolepidotus, fasciatus Bloch & Schneider, flavidus, pisciculus, pisculentis, viridescens, zebra DeKay, pisculentus, fasciatus DeKay, flavulus, zonatus Mitchill, and Cyprinodon ovinus. Back

Quiz26 :

Only 1 species name of Killifish starts with the letter "q". What is it?

The species name, quiii (for Moema quiii), is a noun in apposition and is proposed by the discoverer Lance R. Peck, a biologist, animal photographer and exporter, based in Puerto Maldonado, as a dedication to his wife Belinda who was given the name "Qui i i" by an Ese eja shaman friend years ago. According to him, «the name is derived from the Ese eja word "Qua' i i" which means hummingbird (picaflor). However, "Qui i i" (with a twist of sound) is the name for the "hummingbird of the water"» Back

Quiz25 :

A unique case in Killifishes: for the same fish, two monotypic genera, one being a synonym, and two species names, one being also a synonym obviously. What is it?

Lamprichthys tanganicanus. Also assigned to another new genus Mohanga, a few months later. The female, dimorphic, has been described as Lamprichthys curtianalis (curtianalis means short Anal fin!). Back

Quiz24 :

Scale reduction on Aphanius or Orestias species are common. But, could you name at least one species of each genus completely naked?

Aphanius asquamatus, Orestias minutus, Orestias minimus. Back

Quiz23 :

Branchiostegal appendages are occasionally seen in dominant males of 3 African killifish genera. Which ones?

Procatopus, Plataplochilus, Hylopanchax. Back

Quiz22 :

Sexual differences in the number of Anal fin rays are well known for species of Cynolebias and allied genera. But, is a similar dimorphism reported among African killifishes?

Yes, for Lamprichthys tanganicanus (and for that reason, 2 taxa were described, the other for the female, curtianalis, a junior synonym). Back

Quiz21 :

What are the most northern and the most southern two species of Epiplatys?

Epiplatys spilargyreius in the North (in an oasis of the Sahara desert) and Epiplatys multifasciatus in the South (in the Shaba province of Zaïre or Democratic Republic of Congo). Back

Quiz20 :

Is there a deep-bodied Killifish in Borneo (Kalimantan, Indonesia)? What is the native killifish of that Asian island?

It is Jordanella floridae artificially planted after having escaped from fish farms. The native killifish species, Aplocheilus panchax, is very slender. Back

Quiz19 :

Could you name at least 3 Killifish species that hold no Ventral fins?

There are many, many, such as Cyprinodon diabolis, Megupsilon aporus, Aphanius apodus, Simpsonichthys boitonei, Simpsonichthys chlolopteryx, Simpsonichthys parallelus, Simpsonichthys nigromaculatus, Rivulus nudiventris, Rivulus nelsoni, Tomeurus gracilis, Empetrichthys latos and Empetrichthys merriami, all known Orestias and Crenichthys species (and some others only vestigial Ventral fins, e.g. Rivulus planaltinus. Back

Quiz18 :

Xanthic variants have been reported among killifishes from aquarium breeding and have even been erroneously described, such as Aphyosemion australe hjerressensii or Rivulus urophthalmus auratus. But, have xanthic killifishes been reported from nature? And, if yes, which species?

Yes, Cyprinodon salinus salinus occurs at type locality in both forms, normal and xanthic, with a proportion of 4 per thousand for the latter. Back

Quiz17 :

What is the smallest killifish and could you name at least five species, not more than 25 mm (one each) in total length?

The smallest currently known killifish is Fluviphylax palikur from northeastern Brasil and Guyane. Dwarf species are Plesiolebias glaucopterus and lacerdai, Stenolebias damascenoi and bellus, Leptolebias cruzi, Spectrolebias semiocellatus, Spectrolebias costai, Fluviphylax pygmaeus, obscurus, zonatus, simplex and palikur, Poropanchax (Congopanchax) myersi and brichardi. Back

Quiz16 :

At least 10 killifish species have their type locality in the region of the Niger delta, Nigeria. Only one is unknown live. What is its name?

Fundulopanchax powelli, only known by preserved juveniles, from the eastern part, close to Cameroun border. Back

Quiz15 :

Is there a killifish that produces offspring of clones, without ethical problems, nor lobbying by activists?

Yes the self hermaphrodite Kryptolebias marmoratus and hermaphroditus. Back

Quiz14 :

Which marine island of the world has the highest density of killifish species per square kilometer?

Bermuda, with two Fundulus species in a tiny island, bermudaeand relictus. Back

Quiz13 :

One killifish species has been sent to space, within an Apollo mission, for laboratory experiments. Do you recall its name?

Fundulus heteroclitus. Back

Quiz12 :

The largest and one of the smallest Aphanius species have both a unique vertically angled lower jaw. Can you name them?

Aphanius anatoliae splendens (5 cm) and Aphanius stiassnyae (10 cm). Back

Quiz11 :

Only one Rivulus-like non-annual species is reported as far South as Argentina. Is it aplocheiloides, luelingi or punctatus?

Rivulus (Melanorivulus) punctatus (water can cool down to 6°C!). Rivulus (Atlantirivulus) luelingi is only reported from Brasil and aplocheiloides, also from Argentina, is Rivulus-like, but it is annual and a Trigonectes species. Back

Quiz10 :

If several annual killifishes are living in the same temporary pool, this means that their eggs must have the same standard incubation period. True or false?

No, it has been demonstrated that fry of small species belonging to the genera Simpsonichthys et al. appears first, followed much later by larger Cynolebias species that grows much faster. Depending on the date of collection, the killifish fauna of a temporary pool may then vary. Back

Quiz9 :

What is the African country, South of the Sahara desert, where no annual killifish has yet been reported?

Angola (but this is not the last word on the matter: too few collections). Back

Quiz8 :

Could you name at least 2 Killifish species with a long extension in the middle of the male Caudal fin (not upper and lower streamers)?

Maratecoara lacortei, formosa, splendida, gesmonei, Pseudepiplatys annulatus. Back

Quiz7 :

Water chemistry, and notably pH, has been suggested to influence significantly the sex-ratio in killifish offspring. Is this true and why?

Yes, it is definitely true. The reasons, though, are unknown yet, unlike for human beings. Back

Quiz6 :

Much is known on the famous aquarium species Aphyosemion australe. Would you agree on this provocative assertions: it has been collected in brackish waters; it has been proved to be a semi-annual species with incubation times of up to 8 weeks?

Absolutely true. Aphyosemion australe has been collected with the brackish Poropanchax stigmatopygus and incubation on wet peat is easily achieved for at least 6 weeks. Back

Quiz5 :

Are there any Aphyosemion species with a reversed color pattern, exemplified by blue (not red) spots on a red-brown (not blue) background on male sides?

Yes, all species in Diapteron, such as cyanostictum, georgiae, fulgens, abacinum, seegersi. Back

Quiz4 :

Is there a killifish species that is known only by a single stable population of less than 500 specimens in total? If yes, then name it.

Yes, Cyprinodon diabolis from Devil's Hole, USA, a unique case among fishes (but highly threatened of extension). Back

Quiz3 :

Are you aware of any killifish species female in Africa with black peppered dots on entire body? If yes, name it.

Adamans or Fenerbahce formosus, but not all in a population (a presumably primitive character). Back

Quiz2 :

Predatory behavior on smaller Cyprinodontiformes species is part of life for components of Cynolebias and Megalebias of the New World. Is there a species with the same predatory behavior in the Old World (Africa) and if yes, which one? 

Nothobranchius (Paranothobranchius) ocellatus. Back

Quiz1 :

Do you think possible to bring back mud from biotope containing annual killifish eggs? If yes, who did perform this for the first time and with which species?

Yes, it was achieved by the Belgian biologist Marc Bellemans in Sudan with Nothobranchius aff. rubroreticulatus and virgatus. The clay mud produced hundreds of fry of the two sympatric species. Back