what fields you want?

Assained To:to whom you r reporting the bug.
project id:
project name:
defect id:
defect name:
defect description:
Seviority:
Priority:
Status:
Reproducable or not:
Summary:
Comments:

it depends on the company profile.

bud id,
source
moudle name
tester name
date
time
supported docs
dept
snapshot
proirity
seviority
type
etc.....

When a tester finds a defect, he/she needs to report a bug 
and enter certain fields, which helps in uniquely 
identifying the bug reported by the tester.

Project: Name of the project.
Subject:
Description:
Summary:
Detected By:
Assigned To:
Test Lead:
Detected in Version:
Closed in Version:
Date Detected:
Expected Date of closure:
Actual Date of Closure:
Priority:
Severity:
Status:
Bug Id:
Attachment:
Test Case Field:

Fields are depends on the tool which is used by org
Example CQ is having following fields

Bug id
head line
defect in system
type of CR
monthly release
Cr no
Severity
priority
Release label
description
Actual Result
Expected Result
Steps to Reproduce
Defect against
date of reporting
Resolved date
closed date
closed in release
Bug status
Attachments
Submitter name
contact no