In the switch to a Bible-based diet, lots of fish would seem to be the wise choice. However, as people continue to pollute the waters (and destroy the earth - see Rev. 11), the fish are becoming increasingly toxic. The following article especially calls attention to the dangers of farm raised fish:
"Food testing reveals farmed salmon is one of the most toxic foods in the world, having more in common with junk food than health food...Studies highlighting the seriousness of the problem include: A global assessment of farmed salmon published in 2004, which found 13 persistent organic pollutants in the flesh of the fish. On average, polychlorinated biphenyl (PCB) concentrations in farmed salmon was eight times higher than in wild salmon, prompting the authors to conclude that 'Risk analysis indicates that consumption of farmed Atlantic salmon may pose health risks that detract from the beneficial effects of fish consumption'...According to the U.S. Centers for Disease Control and Prevention, PCBs elicit a significant number of health conditions in animal studies, including cancer, immunosuppression, neurotoxicity and reproductive and developmental toxicity. Disturbingly, research suggests contaminated fish is the most common source of PCB exposure, as the chemicals accumulate and build up in the fat tissue...Toxicology researcher Jerome Ruzzin, who has tested a number of different food groups sold in Norway for toxins, discovered farmed salmon contain five times more toxins than any other food tested...A 2011 study published in PLOS ONE found chronic consumption of farmed salmon caused insulin resistance, glucose intolerance and obesity in mice, thanks to the persistent organic pollutants (POPs) found in the fish...Researchers Warn Farmed Salmon May Contain Fire Retardant Chemicals...Now, researchers warn...farmed Atlantic salmon sold in the U.S. and U.K. may also contain polybrominated diphenyl ethers (PBDEs), toxic POPs that have been restricted or banned in the U.S. and many European countries due to their toxic influence on child development...Health risks associated with these chemicals, including PBDEs, include infertility, birth defects, neurodevelopmental delays, reduced IQ, hormone disruptions13 and cancer..."
I would use only clean, wild fish (unless properly farmed in an organic, clean fashion - which is hardly ever the case). I would stick with the smaller fish. We are living in perilous times.