title: Unity OnTriggerEnter2D not registering
body: <p>I am new to using unity and am having a real problem getting trigger collisions to register.</p>
  <pre><code>public void  OnTriggerEnter2D(Collider2D other)
  {
      print(&quot;collide&quot;);
      if (other.CompareTag(&quot;Fish&quot;))
      {
          print(&quot;Caught&quot;);
      }
  }
  </code></pre>
  <p>I have 2D polygon colliders and a rigid body on both items. I have also got 1 set a trigger(have tried having both as trigger). However one  UI item is a sprite and the other is an image.
  Both items are also tagged with &quot;fish&quot;</p>
  <p>Would really appreciate any help.
  Thanks</p>