From the article....
"Marine species are less susceptible to nitrite toxicity because chloride (at 19,350 ppm in seawater) outcompetes nitrite for the same uptake mechanisms. Nevertheless, it is possible for some marine fish to take up nitrite via both their gills and their intestines after swallowing seawater. For example, when exposed to
46 ppm nitrite in seawater, the European flounder (
Platichthys flesus) takes up 66% of its nitrite via intestinal routes.[SIZE=-1]24[/SIZE] Further, its internal nitrite concentration was found to remain below the ambient nitrite level in the water. At these concentrations, there was some alteration of internal biochemical parameters (such as an increase in methemoglobin levels from 4% in nonexposed fish to 18% of hemoglobin in exposed fish). Nevertheless,
there were no mortalities under these conditions, and the difference between this result and what is often observed in freshwater fish at similar nitrite concentrations is attributed to differences in their internal nitrite concentrations."
"In the only
published article[SIZE=-1]26[/SIZE] that I could find showing toxicity tests to typical reef aquarium fish, Tom Frakes and Bob Studt exposed
tank-raised clownfish (Amphiprion ocellaris;
Figure 2) to nitrite concentrations ranging from 0 to 330 ppm in artificial seawater.
Two of five fish died after a few days at 330 ppm, giving an LC[SIZE=-1]50[/SIZE] not appreciably different from the other species listed in Table 1.
At 33 ppm (the next dose down from 330 ppm), the fish were lethargic and breathing with difficulty, but otherwise experienced no lasting problems. At 3.3 ppm nitrite no effects were observed."
From the chart in the article showing fish and the nitrite levels which affected them:
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Clownfish[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Amphiprion ocellaris[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 344[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Milkfish[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Chanos chanos[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 344[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Japanese eel[/SIZE][/FONT]
[SIZE=-1]
[SIZE=-1]Anguilla japonica[/SIZE][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 302[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Common eel[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Anguilla anguilla[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 3,200[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]European Sea bass[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Dicentrarchus labrax[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 500-800[/SIZE][/FONT][/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Spotted seatrout[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Cynoscion nebulosus[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 980[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Sparid[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Diplodus sargus[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 1,360[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Cod[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Gaidropsarus capensis[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 2,210[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Sole[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Heteromycteris capensis[/SIZE][/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1] - 2,440[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Sparid[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Lithognathus mormyrus[/SIZE] - [/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]1,230[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Atlantic salmon[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
[SIZE=-1]Salmo salar[/SIZE] - [/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]146[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Yellowtail[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
Seriola quinqueradiata - [/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]147[/SIZE][/FONT]
[FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]Sole[/SIZE][/FONT]
[SIZE=-1][FONT=Georgia, Times New Roman, Times, serif]
Synaptura kleini - [/FONT][/SIZE][FONT=Georgia, Times New Roman, Times, serif][SIZE=-1]2,110[/SIZE][/FONT]