Tab. 2. List of species classified according with their tolerance to salinity, abundance, standard length (maximum, minimum, average and standard deviation) and occurrence by elevation; High (352-519), Medium (185-351), and Low (19-184) meters above the sea level in the main rivers of the Río Acahuapa basin, San Vicente, El Salvador, 2011-2012. Shaded data represents the month of occurrence, the black circles represent occurrence by elevation. a Considered amphidromous or catadromous species by different authors based on direct or indirect evidence (Cruz 1987; Ribeiro & Villalobos 2010; Lorion et al. 2011; Smith & Kwak 2014b, 2014a). b Considered diadromous or amphidromous species by different authors based on direct or indirect evidence (Lorion et al. 2011; Smith & Kwak 2014b). c Considered diadromous or amphidromous species by different authors based on direct or indirect evidence (Lyons 2005; Smith & Kwak 2014b).
Family Species N Classification tolerance an origin Standard length (cm) minimum/ maximum Average size/ standard deviation Samples
June August November February May
H M L H M L H M L H M L H M L
Characidae Astyanax aeneus (Günther, 1860) Roeboides bouchellei Fowler, 1923 439 8 Primary Primary 4.22-9.00 5.00-6.50 6.38±1.41 5.93±0.81 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Heptapteridae Rhamdia guatemalensis (Günther, 1864) 62 Primary 3.37-14.50 8.81±3.48 ● ● ● ● ●
Rhamdia laticauda (Kner, 1858) 65 Primary 3.50-19.72 11.14±4.26 ● ● ● ● ●
Ariidae Cathorops steindachneri (Gilbert & Starks, 1904) 18 Marine-estuarine 6.06-9.42 7.74±2.38 ● ●
Mugilidae Agonostomus monticola (Bancroft, 1834) 222 Diadromousa 4.64-25.50 7.95±1.49 ● ● ● ● ● ● ●
Mugil curema Valenciennes, 1836 8 Marine-estuarine 3.71-4.00 3.86±0.21 ● ●
Anablepidae Anableps dowei Gill, 1861 8 Secondary 7.00-16.50 10.41±2.43 ● ●
Poecilia gillii (Kner, 1863) 55 Secondary 4.00-10.25 6.77±1.81 ● ● ● ● ●
Poecilia marcellinoi Poeser, 1995 768 Secondary 3.00-6.80 4.24±0.94 ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Poeciliidae Poecilia butleri Jordan, 1889 802 Secondary 2.92-5.50 3.56±1.31 ● ● ● ● ●
Poecilia salvatoris Regan, 1907 2721 Secondary 1.70-9.75 4.92±1.48 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Poeciliopsis pleurospilus (Günther, 1866) 741 Secondary 2.00-6.00 3.56±0.88 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Poeciliopsis turrubarensis (Meek, 1912) 107 Secondary 2.44-7.00 3.86±1.64 ● ● ● ●
Synbranchidae Synbranchus marmoratus Bloch, 1795 2 Secondary 25.00-40.00 32.50±10.61 ● ●
Centropomus medius Günther, 1864 1 Marine-estuarine 33.00 --- ●
Centropomidae Centropomus nigrescens Günther, 1864 5 Marine-estuarine 14.20 --- ●
Centropomus robalito Jordan & Gilbert 1882 1 Marine-estuarine 17.00 --- ●
Sciaenidae Bairdiella armata Gill, 1863 1 Marine-estuarine 9.00 --- ●
Amatitlania nigrofasciata (Günther, 1867) 446 Secondary 1.50-10.00 5.93±1.65 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Amphilophus longimanus (Günther, 1867) 1 Secondary 5.50 --- ●
Amphilophus trimaculatus (Günther, 1867) 1 Secondary 13.00 --- ●
Cichlidae Amphilophus macracanthus (Günther, 1864) 1 Secondary 23.00 --- ●
Oreochromis niloticus (Linneaus, 1758) 1 Secondary: Exotic 9.00 --- ●
Parachromis managuensis (Günther, 1867) 1 Secondary: Exotic 25.00 --- ●
Parachromis motaguensis (Günther, 1867) 8 Secondary 5.33-8.00 6.02±1.53 ● ● ●
Dormitator latifrons (Richardson, 1844) 36 Marine-estuarine 6.00-12.00 8.28±2.53 ● ● ● ●
Eleotridae Eleotris picta Kner, 1863 1 Marine-estuarine 37.00 --- ●
Gobiomorus maculatus (Günther, 1859) 23 Marine-estuarine 7.00-17.00 9.62±3.71 ● ● ● ● ●
Gobiidae Awaous banana (Valenciennes, 1837) 3 Diadromousb 9.00-13.10 10.05±1.48 ● ●
Sicydium multipunctatum Regan, 1906 183 Diadromousc 6.12-19.25 8.98±2.28 ● ● ● ● ● ● ●
Achiridae Trinectes fonsecensis (Günther, 1862) 1 Marine-estuarine 9.00 --- ●
Paralichthyidae Cyclopsetta panamensis (Steindachner, 1876) 2 Marine-estuarine 10.00 --- ●
Total 6,742 Total species 5 9 15 4 11 14 5 10 14 5 8 15 5 8 21
Primary 1 2 4 1 3 2 1 2 3 1 2 1 1 2 2
Secondary 4 6 5 3 7 7 4 7 7 4 5 7 4 6 9
Marine-estuarine 0 0 4 0 0 2 0 0 2 0 0 5 0 0 7
Diadromous 0 1 2 0 1 3 0 1 2 0 1 2 0 0 3