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Pseudophoxinus burduricus sp. n. is described from drainages of Salda and Burdur lakes, southwestern Turkey. It is distinguished from other Anatolian Pseudophoxinus by a combination of characters: lateral line incomplete, with 21–39 (commonly 26–37) perforated scales and 47–57+1-2 scales in lateral series; 10½–12½ scale rows between lateral line and dorsal fin origin, 3–4(5) scale rows between lateral line and the pelvic fin origin; dorsal fin commonly with 7½ branched rays; anal fin commonly with 6½ branched rays; 7–8(9) gill rakers on the first branchial arch; a faint and diffuse epidermal black stripe from eye to caudal fin base in alive and preserved individuals; mouth slightly subterminal, tip of mouth cleft on about level of lower margin of eye; snout rounded, its length greater than eye diameter. Comparison is given with all Pseudophoxinus species from western Anatolia.

The present study investigated the trophic ecology of two species living in an alluvial lake ecosystem in terms of season, length groups, sex, and mouth morphology. The fish were caught in a coastal lake area between December 2014 and March 2016 using a seine. In general, C. aquaedulcis was the most important prey for S. abaster, accounting for 10.99% of all prey, while amphipods accounted for 54.04% of the S. acus diet. Amphipods were the most frequently consumed prey in autumn, while C. aquaedulcis was the most important prey in spring. This result indicates that the species preferred similar prey groups and generated food competition depending on the season. The short-length group contained samples of S. abaster with empty guts, whereas S. acus in the same group consumed C. aquaedulcis. Length group II and III of individuals indicated that both species consumed amphipods and juvenile Syngnathus sp. Thus, the two species had statistically different preferences in terms of prey length. The mouth width of S. abaster was larger than that of S. acus. In conclusion, zooplankton constituted the main prey for both species in the lake and the morphological differences between the mouth apparatus of the species were due to the differences in feeding habits.

In this research, the current systematic status of endemic Anatolian species, Alburnus nasreddini, has been enlightened by making its morphological description and comparing it with the closest species, A. escherichii. This species has distinguished from the closest species, A. escherichii, by fever perforated scales along lateral line (44-48 vs. 46-53), dipper body depth (26.64 vs. 23.92% SL), shorter snout (25.54 vs. 27.55% HL) and larger eye diameter (31.22 vs. 27.88% HL). Our study has also examined the distribution area and habitat conditions of the species, clearly indicating that A. nasreddini distributed in only Akarçay basin (Eber, Akşehir and Karamık lakes; Selevir and Seyitler reservoirs; Kalli, Adıyan and Akşehir creeks) and Ilgın Lake Basin (Beşgöz Springs-Sarayönü, Aşağı Çiğil Creek-Ilgın). Its observable population until very recently has disappeared from its type locality, Eber Lake, due to heavy pollution. Although its population present in Akşehir Lake is critically endangered due to the drought, presence of viable population in some dam lakes (especially in Selevir Reservoir) is considered as a promising picture with regard to the future of species.

During the period from December 2003 to November 2004 a study has been held to examine the water quality and zooplankton of highly alkaline Lake Burdur. The lake showed thermal stratification between June and October. Six zooplankton taxa were determined, Hexarthra fennica, Brachionus plicatilis from Rotifera and Arctodiaptomus burduricus from Copepoda were the dominant species. Average zooplankton density was 399,074 ind.m -3 and they were 51% H. fennica, 9% B. plicatilis and 40% A. burduricus. In addition, vertical zooplankton distributions have been investigated in this study. Generally, zooplankton groups were concentrated between 5-20 m. However, rotifers and A. burduricus were determined to have the highest density at 5 and 15 m, respectively.

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Description of a new Atractides species, Atractides reinhardi n. sp., from Burdur Province of Turkey is given. Water mites of the genus Atractides Koch, 1837 have been found in all biogeographical regions except for Australia and Antarctica, most of the 297 species described so far are known from Northern Hemisphere: 56 species have been found in the Oriental Region, 47 species have been found in the Afrotropical region, 32 and 27 species have been described from the Neotropical and Neartic regions, while 138 species (46% all described species) known from the Palaearctic and mainly the Mediterranean countries (Gerecke 2003; Pešić & Smit2011). Most species are found only in clean waters with well conserved substratum, thus they are probably sensitive to many forms of human impact (Gerecke 2003). With 29 species, the genus Atractides is among the most species rich genera of the water mite fauna of Turkey which has been insufficiently known (

Hemigrammocapoeta menderesensis is distinguished from all other species of Hemigrammocapoeta in Anatolia by the following combination of characters (none unique to the species): lateral line incomplete; 6-17 perforated scales and 36-41 +1-2 scales in lateral series; 7½-8½ scale rows between lateral line and dorsal-fin origin, 3-4 scale rows between lateral series and anal-fin origin; dorsal fin commonly with 7½ branched rays; anal fin with 5½ branched rays; 15-17 gill rakers on the first brachial arch; pharyngeal teeth 2.4.5-5.3.3; mouth small, subterminal, horseshoe shaped and without barbel; lips developed and somewhat fleshy; upper lip not covering nostril gape; lower lip with two lateral lobes and median pad; lateral lobes smaller and shorter than half width of median pad; numerous papillae on lower and upper lips.