Captive bred common toad tadpoles ( bufo bufo )
Common toad eggs are laid in long strands as opposed to frog spawn which are laid  in  clumps ,the tadpoles are also smaller and much darker in colour to frog tadpoles while they look similar after hatching , frog tadpoles turn a sandy brown color whereas toad tads stay dark black frog tads also get much larger ,unlike frog tadpoles which are fast swimming and secretive preferring to hide near the bottom as there vulnerable to predators ,toad tads are the opposite and are usually seen in large groups swimming out in the open this is due to them being toxic and highly distasteful to ,fish ,birds and mammalian predators although newts will sometimes eat them and their toxins dont deter insect predators at all  ,this is why toads prefer to breed in larger bodies of water with higher fish populations and less aquatic insects in contrast to frogs wich prefer smaller water bodies with no fish ,as the frog tadpoles higher speed and agility is enough for them to evade most insect predators.
Feeding
Tadpoles will eat a wide range of foods 
Fish  Flake 
pellets
Algae wafers
Bloodworm pellets
Sturgeon pellet and most other flake or pelleted foods are good
Frozen foods
Bloodworm
Daphnia
Tubifex
Krill,
Gammarus
Mosquito larvae
Plankton 
Are all great for them , boiled cabbage is also a good choice
Water conditions: 
Ph 6.5 - 7.5
Temp between 8 °C - 24°C
Rainwater, pond water or dechlorinated tapwater are all fine for tadpoles, leaving tap water out for 24 hours for the chlorine to evaporate or adding a dechlorinator, alternatively using an HMA filter is a great wae of purifying and dechlorinating tapwater.
Tadpoles are also scavengers and will eat almost any organic matter found in the pond from dead fish and insects to algae ,dead plants, fish waste and left over food.