Diel activity pattern is the main mechanism controlling the visual environment of teleost reef fish, with day-active (diurnal) fish active in well-illuminated conditions, whereas night-active (nocturnal) fish cope with dim light.
Six main mosquito habitat types namely artificial ponds, abandoned fish ponds, active fish ponds, open drains, temporary pools and swamps were found in Nyabondo.
Fishing activity of a professional small-scale vessel (length 5.8 m; engine horsepower 45 HP) operating in the southwest part of Korinthiakos Gulf (38° 16′ 50″N, 22° 11′ 40″E) was monitored onboard by an independent observer during June 2008-August 2009 covering 262 out of 418 active fishing days (the whole number of fishing expeditions made by the fisherman).
With extraordinarily light trading and a dearth of news, traders who defied Wall Streets apprehension and ventured into the stock market were left polishing up their portfolios ahead of the end of the quarter and bottom fishing in active pockets such as the Internet sector.
A trade-off between defense and population growth is also possible with regard to allocation of time: for example, freshwater copepods can avoid seasonal fish predation by producing diapausing eggs before fish become active, but to do so they must sacrifice their current reproductive output of nondiapausing (immediately hatching) eggs (Hairston and Munns 1984; Ellner 2013).
The fish was active and not yet "suspicious," as Craig would say of spooked fish.
Subsequently, fish were returned to aquariums and fed at 5 minutes post-injection, at which all fish were active and swimming.
The fish became active at night when they had an anemone to hang out with.
Skates feed on mollusks, crustaceans, and fishes, trapping active prey by dropping down on it from above.
The researchers conducted similar depth-recording studies on cod in the Irish Sea and found that these fish were active year-round.
