They are two very good looking rainbows. With bright red flesh, they should be good eating. If Lake Opua is shallow it could be heating up which may be affecting the condition factor of the browns to a greater degree. Optimum water temperatures for the Rainbow and Brown Trout are 10-22°C and 4-19°C respectively. Even if the water has cooled over the past month or so, if it was too hot for them earlier they could have lost condition as a result.