What is TDS? Total Dissolved Solids (TDS) are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of mg per unit volume of water (mg/L), also referred to as parts per million (ppm).
Nagano people, who still have a custom for eating koi, had difficult or even no access to the sea, they went for the secondbest. But anyway, you wouldnât eat the colourful ones for its price, they taste exactly the same as a wild grey one as a colleague of my fatherâs can witness to. But the grey ones are more than affordable so if you want you can also have koi for dinner though they might be a bit difficult to get outside of Nagano Prefecture.
They are less apt to be shy when they are in a large group. Your Koi will eat from your hand, provided you have the patience to earn their trust and friendship. Here are a few helpful hints: 1  Feed them in the same place every time. 2  Drop a small handful of pellets and stay there to observe. 3  The bravest or hungriest will start to eat and the rest will follow.