. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 170 J. Das a girdle of reed from the main water: Valencia (length: 2—3 cm). Ground covered with pebbles (0: 5 — 15 cm). In the habitats of this valley (3 — 5), no Gambusia affinis could be Fig. 6: Habitat 3. A spring in the valley west of the village of Kipseli. The surface of the water is covered by a dense layer of Lemna trisulca. Discussion As most fishes of the order Cyprinodontiformes (Seegers 1980 b) and its relative Valencia hispánica (Val., 1846) (St
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 170 J. Das a girdle of reed from the main water: Valencia (length: 2—3 cm). Ground covered with pebbles (0: 5 — 15 cm). In the habitats of this valley (3 — 5), no Gambusia affinis could be Fig. 6: Habitat 3. A spring in the valley west of the village of Kipseli. The surface of the water is covered by a dense layer of Lemna trisulca. Discussion As most fishes of the order Cyprinodontiformes (Seegers 1980 b) and its relative Valencia hispánica (Val., 1846) (Steindachner 1865), Valencia letourneuxi (Sauvage, 1880) inhabits quiet biotopes densely overgrown by plants. It prefers stagnant or slow running ditches (Labhart 1980; Seegers 1980a; Woeltjes 1982) and pools (Stephanidis 1939). When the fishes are living in larger waters (Butrinto Lake, Albania) they swim in shallow banks overgrown with plants, in most cases where ditches are ending in the lake (Oliva 1961). The mineral contents of the water is of little influence on the occurrence (table 1). The water may have a relativ low mineral contents (13°DGH « 230 ppm CaC03), it may be very hard (> 70°DGH « > 1250 ppm CaC03) or it may be slightly brackish. At any rate, V. letourneuxi could not, as e. g. its relative Aphanius fasciatus (Val., 1821), be found in lagoons and estuaries. The low concentrations of nitrite-, nitrate-, and ammonium ions indicate that the water does not contain much organic matter. Valencia spawns. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Zoologisches Forschungsinstitut und Museum Alexander Koenig. Bonn : Das Forschungsinstitut
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